[EVERTON 1]

Hi all

I purchased a couple of corals the other week, an acro with blue tips and a blue millipora. I placed the blue tip acro halfway up the tank, and the blue millipora 3/4 of a way up the tank. The tips of the acro have gone a cracking sky blue colour, but the millipora has turned Brown. Why would it do that? I have a Arcadia twin 250w halides and 2 39w T5s.

cheers
Brian

[dylan]

give it some time the milli is probally taking a bit longer to settle down ,also make sure the milli gets plenty of flow and keep an eye on your phosphates

[Crabbit]

Need more info but a lot of blue milli have brown polyps and often look brown when settled. What are you water test? Also is your KH stable?

[EVERTON 1]

Crabbit, on Jan 31 2009, 08:30 PM, said:

Need more info but a lot of blue milli have brown polyps and often look brown when settled. What are you water test? Also is your KH stable?

Hi
parameters are

ph 8.3
KH 8
calcium 430
mag 1340
temp 26
salinity 1.0203

I tested yesterday for phosphates etc, and they were all spot on. The millipora when it was delivered, was still looking blue when I opened up the bag, stayed blue in the tank for a couple of days, and then turned Brown. Do you think lowering it down in the tank may help?
cheers
Brian

[Crabbit]

How old are the light bulbs? Also if it were me i would bump the KH up to at least 10 as you will prob get a PH swing with it around 8. What do you feed?

[TrevC]

EVERTON 1, on Feb 1 2009, 11:43 AM, said:

Hi
parameters are

ph 8.3
KH 8
calcium 430
mag 1340
temp 26
salinity 1.0203

I tested yesterday for phosphates etc, and they were all spot on. The millipora when it was delivered, was still looking blue when I opened up the bag, stayed blue in the tank for a couple of days, and then turned Brown. Do you think lowering it down in the tank may help?
cheers
Brian

Might be worth raising your SG a bit.

[EVERTON 1]

Crabbit, on Feb 1 2009, 05:22 PM, said:

How old are the light bulbs? Also if it were me i would bump the KH up to at least 10 as you will prob get a PH swing with it around 8. What do you feed?

Halides are 8mths old, I have just changed the 2 T5s last week. Have been using the Salifert coral food, flake, Mysis for the fish, also mysis for my lps.

[Crabbit]

I'm assuming the SG is a typing error well spoted Trev C and the phosphates are below 0.03 If I was you I would be looking to change my bulbs. Are you running the 14k arcadia bulbs? As when a higher K bulb starts to shift the spectrum the light loss can be a lot. I would be looking to chance my bulbs at 9 months anyway.

[EVERTON 1]

Crabbit, on Feb 2 2009, 03:41 PM, said:

I'm assuming the SG is a typing error well spoted Trev C and the phosphates are below 0.03 If I was you I would be looking to change my bulbs. Are you running the 14k arcadia bulbs? As when a higher K bulb starts to shift the spectrum the light loss can be a lot. I would be looking to chance my bulbs at 9 months anyway.

Hi
Yeah, phosphates are spot on. SG is 1.023. I am using the Arcadia 10k bulbs, was thinking of going over to the 14k bulbs ( someone mentioned you get better colour ) so maybe it's time for the change now. Would I get better colouring changing from the 10k to the 14k? Also, thanks for the info, much appreciated.

cheers Brian