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General Guide for the ZEOvit System
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The intent of this “guide” is to assist you during the start-up phase and general use of
the ZEOvit® system (by Korallen-zucht.de), as well as to give you a basic understanding
of how the system works.
The system consists of two columns, which are described as follows:
Column 1 is the base system consisting of components to minimize nutrient levels.
Column 2 deals with coral coloration and food in a nutrient poor system while
maintaining “near natural” conditions.
The base system involves the effective reduction of nutrients and maintenance
of water conditions close to the parameters corals encounter in their natural
habitat. This column consists for the following components:
1. Balanced mix of zeolites (ZEOvit®)
2. Microorganism solution (ZEObac)
3. Combination product of bacteria and coral food (ZEOfood7)
4. Bacteria food (ZEOstart)
5. Constant filtration with activated carbon
The following requirements are also necessary for the ZEOvit® method to be
successful:
6. Efficient strong skimming
7. Sufficient lighting
8. Optimization of nutrient addition
9. Addition of elements at low levels
10. Optimum water parameters (Ca, Mg, K+, KH, salinity)
11. Regular weekly water changes
12. Sufficient water flow
13. Use of live rock etc.
The goal to be achieved:
The purpose of the system is to create a low nutrient, near natural levels, environment.
The goal is to reduce measurable levels of nitrate (NO3) and phosphate (PO4) without
lowering the levels of important minerals, like calcium (Ca), magnesium (Mg),
Potoassium (K+) and carbonate hardness (KH), such that addition of these trace
elements is minimal.
General Guide for the ZEOvit System
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General Guide for the ZEOvit System
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1. Balanced mix of zeolites (ZEOvit®)
Zeolites are a group of natural occurring minerals that exist worldwide. Their chemical
composition can vary greatly and therefore exhibit different properties of adsorption, ion
exchange or molecular retention. Today’s modern industrial applications require very
specific properties and therefore most of the zeolites used are either modified natural
zeolites or completely synthetically manufactured.
Our mix consists of three different zeolites. These zeolites were chosen because of their
ability to reduce certain toxins in a balanced manner. The functional life of the mix is
limited and has to be exchanged every 6-12 weeks depending on the tanks nutrient
load. The replacement of old zeolite material with new can be conducted in a single
session. The useful life is directly related to the tanks nutrient level. The higher the
load of organic compounds (phosphate - PO4 and nitrate - NO3), a shorter interval for
material exchange is required.
It is important to have sufficient water flow through the filter material (200-400 liters
per 1 liter of ZEOvit®). We strongly recommend not exceeding the maximum
flow rate of 100 gph per 1 liter of ZEOvit®, which could undoubtedly have a
negative impact. High water flow through the media in already stocked tanks,
especially during the start up of this system, has shown to cause slow tissue loss in SPS
corals. We recommend a lower flow rate through the media during the first few
weeks of introduction of this method to a tank already stocked with corals. The
effectiveness of this system in reducing nutrients could result in changes that are to
abrupt when higher flow rates are used. However, corals need time to “adapt” to these
new nutrient conditions.
We also recommend against use of phosphate absorbers, no matter if iron or aluminum
based, when using this system. The system by itself is able to lower and maintain low
levels of PO4 very effectively.
The amount of ZEOvit® used is 1 liter per 100 gallons of water. It is important not to
exceed this recommended amount, because excessive amounts of ZEOvit® could have a
negative effect on SPS corals and lead to tissue necrosis and therefore coral death.
Signs of overdose are tissue loss starting from the coral tips or the complete loss of all
tissue within a short period of time (i.e., rapid tissue necrosis, RTN). This problem
occurs usually because of the rapid change in nutrient conditions in the tank. As
mentioned above, corals need time to adapt to changes and an overdose does not allow

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General Guide for the ZEOvit System
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for gradual changes. In order to calculate the required amount of material, take the
gross water volume of the total system and subtract approximately 20% for an average
decorated tank to come up with the net water volume. Use this net water volume to
determine the required amount of ZEOvit®.
We recommend using only 60% of the required material for the first interval if your
corals display high levels of zooxanthellae (i.e., dark brown with dull tissue appearance
because of unnaturally high nutrient load).
Rinse the ZEOvit® material very well with fresh water before use so that fine particles
created by abrasion during transportation are removed. An initial cloudiness in the
water during introduction of new material is not harmful to living organisms and usually
disappears within an hour.
It is important to clean the material daily to maintain optimum performance. The filter
specifically designed for the system makes it possible to accomplish this task within a
minute. The filter system consists of a cylindrical tube in which water from the tank
flows from the bottom to the top. The ZEOvit® material is placed on top of a perforated
plate, which is connected to a PVC rod. To clean the material, push and pull the rod
(about 2-4 inches) approximately 10 – 15 times. Keep the filter pump running during
this cleaning process. If possible, we recommend doing this cleaning once or twice
daily. It is not detrimental, if you are unable to perform this task for several days.
Return to the regular cleaning schedule as soon as possible. Suitable filters can be
obtained from us or from one of our dealers.
The mulm, released from the ZEOvit® material, contains bacteria that are used as food
by the corals. We therefore recommend placing the ZEOvit® filter after the skimmer in
the last compartment of the sump. This is very important because it provides nutrients
to the animals. This procedure has a very positive impact on colors, polyp extension,
and vitality of the corals. Large Polyped Corals (LPS) react with fully expanded tissue.
The material does not directly remove nitrite (NO2), nitrate (NO3), or phosphate (PO4)
from the tank water. It permanently absorbs ammonium (NH4
+) and ammonia (NH3),
the first two chemicals in the nitrification cycle, thus preventing the formation of nitrite
(NO2) and nitrate (NO3).
Certain other elements are adsorbed as well and require addition to counteract
depletion, which would have a negative effect on the environment. We strongly
recommend replenishing those elements and we offer supplements to be used with this
system.
At this point we would like to warn you not to use just any zeolite. There are several
hundred different materials with this name. Every zeolite has been designed or
modified for a specific use. Using a zeolite with the wrong properties could have
detrimental effects on your tank and lead to the loss of all animals. Such total
crashes have been reported to us in the past when the wrong zeolites were used. A
visual selection or comparison is not possible since different zeolite material often
looks alike. For the safety of your animals, only use zeolites that are packaged in
ZEOvit® bags. You can see a picture of it on our homepage (www.korallen-zucht.de

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General Guide for the ZEOvit System
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or www.captiveoceans.com). We recommend not using the material if the bag looks
different.
You should connect the ZEOvit® filter pump to an automatic timer if you have a high
nutrient load or during the starting phase of the system. The pump should be switched
on and off at an interval of 3 hours (3 hours on, 3 hours off, 3 hours on, 3 hours off,
etc.) leading to an alternating environment of aerobic and anaerobic conditions. Every
switch leads to an increased aspiration of PO4 by the microorganisms/bacteria residing in
the material. This is not absolutely necessary in stable and very nutrient poor tanks.
Please make sure that the media won’t be exposed to air while the pump is off. This
could damage the micro-organisms/bacteria that has populated the area. An example
would be a filter that sits above the tank. In such a case it would be possible to place
the ZEOvit® filter within the aquarium.
Dosing:
A) Amount to be used in newly established tanks with fresh water and live rock
(non-stocked):
Use 1 liter ZEOvit® per 100 gallons net water volume with two exchange intervals of
4 weeks each. Subsequent dosing should follow that designed for tanks that are
nutrient poor and running stable with ZEOvit® system. Water flow through the
media should be between 50 and 100 gallons per hour.
Amount to be used in tanks with high nutrient load and in tanks using
ZEOvit® for the first time (already stocked):
Use 1 liter ZEOvit® per 150 gallons net water volume with exchange interval of 6 – 8
weeks. Subsequent dosing should follow that designed for tanks that are nutrient
poor and running stable with ZEOvit® system. Water flow through the media should
be 50 – 60 gallons/hour per 1 liter of ZEOvit® during the first few weeks.
C) Amount to be used in tanks, which are nutrient poor and running stable with
ZEOvit® system (already stocked):
Use 1 liter ZEOvit® per 100 gallons net water volume with exchange interval of 6 –
12 weeks. Water flow through the media should be 50 - 100 gallons/hour per 1 liter
of ZEOvit®.
Used in a ZEOvit® filter and cleaned daily as described above to remove any build
up and to release mulm.

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General Guide for the ZEOvit System
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2. Microorganism solution (ZEObac)
This liquid solution contains several bacterial strains. The added microorganisms can be
used as a food source by the corals. ZEObac consists of different bacterial strains that
form a chain for nutrient reduction. An interruption of this chain leads to a disturbance
and the accumulation of unwanted substances. For this reason, renewed dosing of the
bacterial solution is recommended. Interruption in dosing for a long period of time will
inevitably lead to a so-called monoculture. The added microorganisms work in principle
as a chain reaction, which reduces substances step by step until the skimmer is able to
permanently remove it from the tank. The result can be seen in the increased
concentrated adsorbent in the protein skimmer the days following. It should be dosed
for a period of 10-14 days after every exchange of ZEOvit® (and for the initial use of
ZEOvit®). In order to maintain the microorganisms, we recommend an additional dose
outside of this period once or twice weekly at the same dosing rate. Over dosage in a
nutrient poor environment leads to a darkening of the coral tissue.
This product has a limited shelf life because it contains cultures of living microorganisms.
Unopened, it will last for at least 6 months if kept refrigerated. After the bottle is
opened, the shelf life is approximately 3 months. Spoiled strains can be identified by a
foul odor. If this is the case, some of the microorganisms are dead and the solution
cannot be used. We recommend purchasing a bottle size that can be used in a 3-month
period. It is better to purchase smaller amounts on a more frequent basis. Please make
sure to avoid any contamination of the solution in the bottle (e.g. with aquarium water).
Dosing:
A) Amount to be used in newly established tanks with fresh water and live rock
(non-stocked):
During the start of the ZEOvit® system:
2 - 4 drops per 25 gallons net water volume daily over a period of 2 weeks.
Subsequently, dose 1 - 2 drops per 25 gallons net water volume once or twice
weekly until the change of ZEOvit®.

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After the first exchange of ZEOvit®:
Every other day 1 drop per 25 gallons net water volume over a period of two weeks.
Subsequently, dose 1 drop per 25 gallons net water volume two to three times
weekly.
Amount to be used in tanks with high nutrient load and in tanks using
ZEOvit® for the first time (already stocked):
During the start of the ZEOvit® system:
Dose 1 drop per 25 gallons net water volume daily over a period of 2 weeks.
Subsequently, dose 1 drop per 25 gallons net water volume two to three times
weekly until the change of ZEOvit®.
After the first exchange of ZEOvit®:
Every other day 1 drop per 25 gallons net water volume over a period of two weeks.
Subsequently, dose 1 drop per 25 gallons net water volume two to three times
weekly.
C) Amount to be used in tanks, which are nutrient poor and running stable with
ZEOvit® system (already stocked):
Dose 1 drop per 25 gallons net water volume every three days over a period of 2
weeks every time ZEOvit® is exchanged. Otherwise, dose 1 drop per 25 gallons net
water volume once or twice weekly.
Please keep in mind that the 3 different phases may vary in duration considerably.
We recommend adjusting the dosing to the phases accordingly.

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3. Combination product of bacteria and coral food (ZEOfood7)
This substance is also delivered in liquid form, dosed at the same time and in
combination with the microorganism solution (ZEObac). The purpose of this product is
twofold:
Multiplication and food for the dosed microorganisms and
Food source for corals
ZEOfood7 contains amino acids as well as several vitamins, which enable the coral to
take up necessary nutrients leading to natural coloration.
We have chosen to describe our products with version numbers because of the
continued improvement of the system. The products are appropriately named including
the number of the version (e.g. ZEOfood7). Starting with version 7 of this product
(ZEOfood7 7), a darkening of the tissue will not occur, even if over dosed heavily.
Another indicator is the formation of a heavy bacterial film on the decoration and the
tank glass/walls. Even though this film is welcome, it should be kept low for purely
esthetic reasons.
Similar as with ZEOstart, it is possible that a visible brown or light green bacterial film
builds that looks like a diatom bloom. When this occurs, we recommend that dosing of
ZEOfood7 and ZEOstart be ceased for a few days until the film is gone. This film usually
builds when there is an over dosage. We recommend adjusting your dosing amount

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Dosing:
A) Amount to be used in newly established tanks with fresh water and live rock
(non-stocked):
During the start of the ZEOvit® system:
2 – 4 drops per 25 gallons net water volume daily over a period of 2 weeks.
Subsequently, dose 1 –2 drops per 25 gallons net water volume once or twice weekly
until the change of ZEOvit®.
After the first exchange of ZEOvit®:
Every other day 1 drop per 25 gallons net water volume over a period of 2 weeks.
Subsequently, dose 1 drop per 25 gallons net water volume two to three times
weekly.
Amount to be used in tanks with high nutrient load and in tanks using
ZEOvit® for the first time (already stocked):
During the start of the ZEOvit® system:
Dose 1 drop per 25 gallons net water volume daily over a period of 2 weeks.
Subsequently, dose 1 drop per 25 gallons net water volume two to three times
weekly until the exchange of ZEOvit®.
After the first exchange of ZEOvit®:
Every other day 1 drop per 25 gallons net water volume over a period of two weeks.
Subsequently, dose 1 drop per 25 gallons net water volume two to three times
weekly.
C) Amount to be used in tanks, which are nutrient poor and running stable with
ZEOvit® system (already stocked):
Dose 1 drop per 25 gallons net water volume every third day over a period of 2
weeks every time ZEOvit® is exchanged. Otherwise, dose 1 drop per 25 gallons net
water volume once or twice weekly.
Please keep in mind that the 3 different phases may vary in duration considerably.
We recommend adjusting the dosing to the phases accordingly.

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4. Bacteria food (ZEOstart2)
This product is a liquid food source and promotes the reproduction of all nitrifying
bacteria in the aquarium. It is therefore very effective in reducing phosphate (PO4) and
nitrate (NO3.)
We recommend continuous daily use of this product as a food source for nitrifying
bacteria. For above-mentioned reasons, be careful and alert. With sustained
overdosing, it is possible that a visible brown or light green bacterial film builds that
looks like a diatom bloom. This film usually builds when there is an over dosage. When
this occurs, we recommend that dosing of ZEOfood7 and ZEOstart be ceased for a few
days, until the film is gone. We recommend adjusting your dosing amount accordingly.
Daily dosing has shown to be necessary in practical tests in order to avoid large
„variations“ in bacteria population. Therefore, we strongly recommend dosing
smaller amounts throughout the day (if possible, split between morning and
evening dosing) rather than larger amounts infrequently. Our observations have
shown positive effects on coral coloration when the nutrient level can be kept very close
to detectable levels. Excessive dosing can have a negative impact on PO4 and NO3
reduction. If these parameters are not dropping lower after a few weeks of dosing it is
recommended to reduce the dosing amounts.
Dosing:
A) Amount to be used in newly established tanks with fresh water and live rock
(non-stocked):
Dose 5 ml per 25 gallons net water volume daily for 2 – 3 days.
Subsequently, dose 1 ml per 25 gallons net water volume over a period of 2 weeks.
Subsequently, dose like in tanks that are nutrient poor and stable running with the
ZEOvit® system.

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Amount to be used in tanks with high nutrient load and in tanks using
ZEOvit® for the first time (already stocked):
Dose 2 ml per 250 gallons net water volume daily.
Subsequently, dose like in tanks that are nutrient poor and stable running with the
ZEOvit® system.
C) Amount to be used in tanks, which are nutrient poor and running stable with
ZEOvit® system (already stocked):
Dose continuously 1 – 2 ml per 250 gallons net water volume daily depending on
nutrient conditions.
Good results were achieved when dosing was done 2 - 4 times daily with the aid of a
dosing pump. Please keep in mind that a high quality and reliable dosing pump
should be used to assure proper dosing amount and error free operation. Check the
dosing amount on a regular basis when using a dosing pump.
We generally recommend using the lower dosing and water flow amounts until you get
comfortable with the system. As mentioned before, corals require a certain period of
time to acclimate to the parameters of their environment. The more time you give your
tank for these changes the less problems will occur. Please don’t treat this system with
the „more is better“ philosophy.
In case you are absent and you are unable to dose or „stir“ the media on a daily basis,
just pick up where you left off upon your return.

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5. Constant filtration with activated carbon
We recommend the continuous use of our high quality activated carbon for filtration. The
effect of activated carbon can vary greatly, therefore we recommend against the use of
any other brand. Use 0.5 to 1 liter of activated carbon passively in a mesh bag per 250
gallons of tank water. Completely replace the activated carbon every 30 days. This will
keep your tank water crystal clear allowing for unrestricted and true light penetration.
Our carbon adsorbs several proteins (similar to a skimmer) as well as toxins released by
corals. In order to maintain the efficiency of the carbon, we recommend kneading the
mesh bag every couple of days. This will keep channels from forming. We recommend
using activated carbon in a filter with forced flow. Tests have shown that the
appropriate amount of carbon can also be placed in the filter on top of the zeolites. We
would like to point out that during tests of various brands of activated carbon, some had
negative effects on coral coloration.
The water will become more clear with this active carbon use, allowing increased light
transmission to our reef, therefore, precautionary steps may need to be taken to avoid
too much light-stress to our corals, such as raising our main lighting pendants,
shortening the photoperiod, or both. If you employ high powered lighting, we
recommend to slowly increasing the amount used in 2 steps. The increased water
clarity can lead to coral tissue damage. In case of strong active application, we
recommend to use 50% of the carbon used passively.
We recommend not using a higher amount of activated carbon then mentioned above.
Place the carbon in a mesh bag (or nylon sock) and soak it in RO water that is heated to
approximately 90 degrees Celsius. Let it soak for about 24 hours while it cools before
placing it into your system. The carbon can be rinsed from the carbon dust in the RO
water as well. The blackening from the carbon will not have a negative impact on your
system.
Dosing (passive flow):
A) Amount to be used in newly established tanks with fresh water and live rock
(non-stocked):
Continuous use of 0.5 to 1 liter of activated carbon per 250 gallons net water
volume, exchanged every 30 days.

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B Amount to be used in tanks with high nutrient load and in tanks using
ZEOvit® for the first time (already stocked):
Continuous use of 0.5 to 1 liter of activated carbon per 250 gallons net water
volume, exchanged every 30 days.
C) Amount to be used in tanks, which are nutrient poor and running stable with
ZEOvit® system (already stocked):
Continuous use of 0.5 to 1 liter of activated carbon per 250 gallons net water
volume, exchanged every 30 days.
In summery, with the use of the four mentioned elements, it is possible to reach near
natural levels of compounds measurable by aquarists. Keep in mind; every tank is
different with its own environment. There are variations, not only with the nutrientproducing
animals, but also with the kind and amount of microorganisms. The amount
of nutrient consumers (e.g., corals) makes it virtually impossible to give an exact dosing
recommendation. In order to reach the full potential of the system, we recommend
using the above mentioned dosing amounts and dosing intervals to slowly find the
optimum values for your system without overdosing.
However, near natural water conditions are not enough to achieve the desired growth
rates, as well as promotion of intense colors. Some secondary conditions are also
required which will be described below.
Positive effects could be observed when amino acids were used during the transition to a
low nutrient environment. We recommend the use of our product “Amino Acid High
Concentrate” for SPS corals and “Amino Acid LPS” for large polyped stony and soft
corals. The use of our coral food, Pohl’s Coral Vitalizer, has shown to be beneficial to the
corals in this environment.
We would like to emphasize that the use of Ozone or UV sterilizers are not
possible with this system. The added microorganisms and elements will be
destroyed by its use.

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6. Efficient strong skimming
As mentioned earlier, the basis of this method relies on export of harmful substances
through skimming. Continuous use and frequent cleaning should be conducted in order
to keep the skimmer performing at its maximum level. The results are better when the
skimmer is adjusted in order not to produce too much concentrated skimmate (wet
skimming). We would like to point out that it is our thought that needle wheels may
precipitate certain elements and destroy plankton. These elements, e.g. such as
potassium, will need to be re-added to the system. Do not use a skimmer that is too
oversized or employ wet skimming if you use a needle wheel skimmer. We recommend
the use of venturi type skimmers.
7. Sufficient Lighting
We recommend the use of metal halides with a color temperature of 10,000 – 14,000
Kelvin (e.g. BLV), since this bulb produced the best results in practical experiments. In
these tests, these bulbs brought the most intense and best colors in corals grow-out and
holding tanks. Because the color of this bulb appears to yellow to the human eye and
many prefer the bluer spectrum, it is possible to supplement it with the appropriate blue
bulbs. We use exclusively T5 bulbs because of the highest efficiency available with the
reflectors. The intensity, as well as the spectrum of the light, plays a major role in coral
coloration.
Or: Another real alternative is lighting strictly with T5. We achieve great results in our
tanks as far as growth and coloration is concerned with Korallenzucht Coral Light and
Fiji Purple bulbs. We use a combination of 2 ; 4 (Fiji Purple/Coral Light) at an intensity
of approximately 550 Watts per m2. The bulbs are replaced every 6-8 weeks to assure
best results.

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8. Optimization of nutrient addition
Keeping with the goal of the system to reach a low nutrient environment, it is necessary
to limit introduction of nutrients with top off water and to keep feeding to a minimum.
There are several ways to do this. We recommend removal of dissolved solids by means
of a reverse osmosis system for water changes and top off water. It is helpful to use a
de-ionization unit after the RO unit. Another source of nutrients comes from fishes.
Their fecal matter, as well as uneaten food, adds to accumulation of nutrients in the
water. Feeding small portions with the pumps turned off keeps food from drifting into
the decoration and limits the resulting decomposition process of nitrite (NO2), nitrate
(NO3), and phosphate (PO4). The amount and type of fishes should be adapted to the
type and size of the system.
9. Addition of elements at low levels
Low nutrients, of course, also apply to the addition of elements. We advise against high
amounts of additives in this environment because problems will occur sooner or later. I
attribute these problems to the slow, but steady accumulation of unused substances. In
this case, less is often more. Many of the added elements have toxic effects on the
animals if they reach certain levels and, therefore, bring more disadvantage than
advantage. This is the point that requires some kind of change in the train-of-thought
with this system. Regular addition of elements in very small amounts and scheduled
water changes are enough to avoid deficiencies in the corals. It is impossible to
recommend certain amounts since every tank is different. The kind of equipment, as
well as stocking of the tank, requires high levels of individuality. The observation skills
of the person taking care of the corals are very important. One must keep in mind that
additions in this environment have delayed reactions of 2-3 days. This fact is very
important when adding elements. We recommend, when dosing elements with unknown
effects, to dose carefully and only once. Wait a few days and observe your corals
reactions. A very helpful parameter is the coloration of your corals. The tissue should
remain light and the coloration should be intense as they display in nature.
Provided that measurable parameters of nitrate (NO3) and phosphate (PO4) are
consistently at low levels, any darkening of tissues and disappearance of coloring is
almost always an indication of over dose. In our opinion, this is a much better indicator
than the questionable results of many test kits. Sometimes the visual observation can
lead to great differences in concentration readings due to the subjective interferences
required in these test kits.

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As long as parasites are not an issue, subdued colors and dark or brown tissue is, in
most cases, is the result of high nutrients. It can be assumed that either nitrate (NO3)
or phosphate (PO4) is present or too many other elements are available.
We do not recommend the addition of the following products from the start. Allow the
necessary time for your corals to adjust to the new environment. We recommend
dosing these products after coral tissue becomes lighter. The proper time to do this can
vary greatly and depends on your tanks starting nutrient load.
The following reactions can be observed when dosing the described elements and should
help in determining dosing rates:
Potassium iodide / fluoride concentrate:
The addition of this supplement leads to improved blue colors in SPS. In contrast to PVP
iodide or Lugols Iodide solution, there is no tissue darkening as long as the amount is
appropriate. As a starting dose we recommend to dose 1 drop per 25 gallons, however
the dosing amount and interval should be adjusted to your tank. A very good indicator
for dosing is yellow coral. If your yellow corals display a green shimmer, it is an
indicator of over dosage of this product (or iron concentrate). When this happen, we
recommend that dosing be ceased until coral colors become intense yellow again. With
blue acropora, dosing should be done when colors become less intense. In most cases,
dosing twice weekly at a rate of 1 drop per 100 liters should be sufficient. This
supplement can also be used in tanks not using the ZEOvit® method.

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Iron Concentrate:
The addition of iron primarily affects the green color formation. However, this element
has to be treated with caution. Iron is known to increase coral growth, but also the
growth of algae. You can see the same result in the density of zooxanthellae in coral
tissue. Darkening of tissue suggests too much iron is being added. As an initial dosing
regimen, we recommend 1 drop per 25 gallons daily. This dosing amount and interval
should be adjusted accordingly. We recommend using yellow corals as indicators. Stop
dosing when yellow corals display a green shimmer. Stop dosing this product (or
potassium iodide / fluoride concentrate) until yellow corals become intense yellow again.
In most cases, dosing twice weekly at a rate of 1 drop per 25 gallons should be
sufficient.
(Another indicator that your corals lack iron: red acropora turns pale pink and green
acropora turns yellow.) This supplement can also be used in tanks not using the
ZEOvit® method.
Macro element solution (ZEOspur Macroelements concentrate)
This product supports growth as well as color formation. This product does not contain
the “standard” elements but rather elements missing from synthetic salt mixes.
However, these elements are available at very low concentrations in natural seawater.
We recommend dosing once weekly at a rate of 5 ml per 25 gallons in heavy stocked
tanks and less in tanks with fewer animals. This supplement can also be used in tanks
not using the ZEOvit® method.

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Stylo – Pocci -Glow

This product “regulates” the density of zooxanthellae in pocillopora, stylophora and
seriatopora. The reduction of zooxanthellae allows for better visibility of lower lying
tissue colors. A general lightening of the above-mentioned species is possible with this
product. It takes about 14 days to reach the highest level of coloration when using this
product. We recommend dosing be stopped at that point until colors become darker
again. We recommend addition at a rate of 2 drops per 25 gallons every time these
coral species become darker again. Start dosing again and repeat the above steps. This
supplement can also be used in tanks not using the ZEOvit® method.
Amino Acid High Concentrate

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This product primarily aids growth as well as vitality. Our experiments have shown that
corals can increase growth by up to 100%, even if placed in low light spots. Polyp
extension is also maximized. We exclusively use amino acids that are available in the
wild and can be utilized by the corals. We recommend dosing of 1 drop per 25 gallons
daily. Over dosing is not a factor, as long as there is no problem with brown slime
algae. It is possible that coral tissue darkening occurs if there is a continued
overdosing. In that case, reduce the dosing amount to 1/3rd. You should not have a
problem with this, if you follow the dosing instructions. However, if signs of excessive
dosing occur, stop dosing for a few days until the slime build-up is gone. This
supplement can also be used in tanks not using the ZEOvit® method.
Amino Acid Concentrate LPS


This product is a high quality food source based on amino acids, designed specifically for large
polyped stony corals (LPS) such as Cynarina, Blastomusa, Welsophylia, Symphylia, Musidae,
Fungias, Heliofungias, and Catalaphylia. Corals expand their tissue immediately after dosing. Regular
dosing has a positive impact on coral growth. It can help in the regeneration process of damaged
corals. We recommend to use this product especially during the initial change of the system to a low
nutrient environment, because the slow acclimation of these coral species. We recommend dosing 1
ml per 50 gallons daily. Reduce the dosing amount if the tissue color of the corals becomes browner.
Trace element solution (ZEOspur2)

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It is possible with this product to influence the amount of zooxanthellae in the coral
tissue. The coral itself has more energy for growth because the zooxanthellae density
requires less energy. This is possible for acropora, anacropora and montipora. The
reduction of zooxanthellae in the outer layers brings out the colors of the coral from
deeper layers. ZEOspur2 is also able to influence colors. However, the primary color
shown will be the color right below the layer with the zooxanthellae. It is possible to
reduce the amount of zooxanthellae so much that the coral will not get enough energy
via photosynthesis. This condition can be maintained for a long period of time without
damage to the coral. However, our experiments have shown that continued
overdosing, and only under this condition, coral tissue will become thinner and thinner
and ultimately completely dissolve. We recommend dosing every 14 – 21 days. It is
important to apply the full dose all at once or there will no be any changes. The
reduction of zooxanthellae occurs within 48 hours and also reaches its highest point at
that time. The reaction and, therefore, the dosing amount are different from tank to
tank. We recommend starting at 50 % of the recommended amount to get a feel for the
product. Subsequently, you can increase the dosing amount, not the interval, by 10%
each time to find the perfect dosing amount. The maximum dosing amount is 1 ml per
25 gallons and should not be exceeded. We do not recommend the use of this product
during the initial starting phase of the ZEOvit® system. There is too much change and
your corals will not have enough time to adjust safely. We would like to mention at this
point that this product has the fastest and most drastic impact of the whole system. The
optimum dosing, in this case, is absolutely necessary in order not to damage your
corals.
Pohl’s Coral Vitalizer (Natural Coral Food)
Our new coral food is now available after extensive development. This concentrate
contains both liquid and solid elements, providing food to SPS corals and as well as
several soft corals. It does not contain phosphates (PO4) or nitrates (NO3). Positive
effects can be noticed after 7 – 10 days if the dosing is daily. You will notice increased
polyp extension, even during the light period, after the corals have had a chance to get
used to the new food source. This food source does not increase the zooxanthellae
reproduction even if overdosed. Corals retain their bright, natural color and increased
growth.

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The bottle should be stored in a refrigerator and has a shelf live of 12 months. We
recommend daily dosing (during the dark period if possible) of 1 – 3 drops per 25
gallons. Adjust the dosing amount accordingly to your tank stocking level.
Pohl’s Coral Snow
Coral Snow is a liquid form secondary biological facilitator for elements such as Bbalance
and Potassium-Iodide/Flouride Concentrate. It is also compatible with Amino
Acids and Coral Vitalizer. Coral Snow contains a natural calcium-magnesium carbonate
among other ingredients. The particles as well as the other compounds can be taken up
directly by the corals. Coral Snow neutralizes unwanted acids and yellowing compounds
and can be beneficial in the prevention of e.g. slime algae and cyano bacteria. We dose
Coral Snow daily, every time with a different element, The necessary amount of
Coral Snow is poured into a small container and mixed with the to be dosed element.
Gently mix and let it sit for about 5 minutes. Then add it directly to the tank at an area
with high water flow.
You can use 0.5 to max. 4 ml Coral Snow per 25 gallons daily. The initial cloudiness is
not harmful to fishes or even the most sensitive corals. We have been successful
eliminating cyanobacteria with the help of Coral Snow. In order to do that, add 1 drop
of ZEObac per 25 gallons of tank water to the Coral Snow. Dose every two days until
cyanobacteria is gone.
It is not necessary to turn the skimmer down or off during dosing. You will notice the
water is extremely clear after the initial cloudiness disappears. It appears very similar
to when fresh activated carbon is placed into a tank. Please be aware that the clear
water in combination with intense lighting can initially burn your corals. We recommend
you raise your lights for about a week if that occurs.