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Simon Garratt

Po4x4 Product information

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Please feel free to ask any questions regarding the use of Po4x4 on this thread and we will endevour to answer them as quickly as possible.




Product information: PO4x4 phosphate removing media.





As any successful aquarist will tell you, keeping control of nutrients is one of the main objectives if you are trying to keep fast growing, vibrant, healthy stock and keep problem algae at bay. Phosphate is one of the major contributors to excessive and problematic algae growth, as well as an inhibitor to calcification in stony corals leading to poor growth and colour. PO4(x4) is the cleanest, most advanced, and most efficient phosphate removal media available to the hobbyist today. Unlike standard GFO (granular ferric oxide) media’s designed for phosphate and silicate removal in both saltwater and freshwater aquariums, Po4x4 is a super clean, no fuss, rechargeable, micro-bead polymer that can absorb up to 4x the amount of phosphate and silicate compared to many competing brands for a given volume of media used.


Absorption Capacity:


Just 250ml of PO4(x4) will remove up to 3.0ppm Po4 from 4000lts of saltwater or 3.0ppm Po4 from 8000lts of freshwater giving PO4(x4) one of the highest absorption capacities in its class, commonly up to 4x the amount taken up by competing brands when comparing volume to cost ratio.

PO4 (x4) Phosphate Remover is a unique chemically engineered polymer based mini pellet bound to very pure FeOH2 that is durable enough to withstand heavy use in fluidised reactors with no risk of abrasion and fines release.. Both the polymer as well as the Iron molecules are able to bind PO4 without any risks of leaching back to the aquarium. By combining these two traits we have increased the binding efficiency to very high levels. In addition, PO4(x4) contains only Iron hydroxide, compared to normal GFO which consist of a mixture of iron hydroxide as well as iron oxide of which only the first form can bind phosphate. This means that PO4(x4) with its higher content of Iron hydroxide can bind much more PO4 than many alternate brands for a given volume of media.



Surface area:


By keeping the pellet very small (much like the consistency of De-ionising resin) PO4(x4) offers a much larger surface area for volume compared to most other media’s. This means that the media has much greater contact with passing water for its volume when used in a fluidised reactor. Plus the media is easier to keep fluidised effectively due its low mass which means less tendency to clump with resulting channelling and loss of efficiency.



The Clean Option:


Being a polymer, PO4 (x4) won’t release any fines or red clouding into the water column unlike standard GFO medias which can irritate and stress some corals, or if severely over fluidised, lead to fines accumulation in substrates. This means no need for rinsing several times before use, and an easier time for the hobbyist when handling the media or cleaning out a reactor. Just place the media into a reactor or media bag* and the media is ready to go. *for maximum efficiency, fluidising is recommended to increase contact area and contact time, although PO4 (x4) can still easily be used to good effect in a high flow (large micron) media bag placed in a high flow area such as the sump, or rear compartment on Nano-aquariums


Recommended Dosage 25-50ml per 100lts of system volume. (maximum recommended 100ml/100lts





PO4(x4) can be recharged up to5 times by using PO4(x4) regeneration powder which flushes the bound phosphate and silicates from the polymer via a strong chemical action. This means that over the long term when combined with its superior absorption capacity, PO4 (x4) is one of the most cost effective methods of removing phosphate and silicate from aquarium water, with a total absorption capacity (after factoring in 5 x regenerations) in exess of 20x that of most other brands.


Please note that to get the best results, It is highly recommended that our user manual is downloaded and followed which can be found here: Po4x4 phosphate remover


You can also view a video demonstration of how much fluidisation to aim for here:






You can also see comments and photos from an end user review: PO4x4 Review


If you still have any questions after reading the user manual and observing the video, please feel free to ask in this thread, or send your question via email to the address on our home page.


For availability, please visit the dealer list on our website for your nearest stockist.


Many thanks.

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