Yellow acro turning green

[Tab28]

I have a small wwc tweety bird frag. It was yellow but is now turning green. Is that from too much or too little light?

 

[Rob.D]

Do you know what species Acropora?

 

[Tab28]

Sorry I don't. Only WWC's name for it.

 

[AdamNC]

Generally when sps turn green they are not getting enough light. But it could be it's acclimating to your parameters.

 

[reefaboo]

lower light and higher nutrients cause yellow acros to green i posted the same question while ago, good luck

 

[Triggreef]

Higher po4 makes green acros

 

[Tab28]

Thanks for info. My phos are not above .03 but for sps that may be high. Will up the GFO and slowly move it.

 

[reefaboo]

Thanks for info. My phos are not above .03 but for sps that may be high. Will up the GFO and slowly move it.

0.03 for sps is fine dont add gfo that will only mess up the tank
This is all imo but what light do you have ?

 

[Tab28]

Lighting is 250 MH with radiums. But the tweety bird is not directly below it. I always put frags in the top frag racks but are toward the front. But it may be less lighting than it was at LFS.

 

[Rob.D]

By the looks of WWC's photo of the acro my best guess is: http://coral.aims.gov.au/factsheet.jsp?speciesCode=0006

What most have already said, this type of bright green acros prefers high light.

 

[RoskoReef]

or your iron and potassium are high, brings out the green hues in most corals

 

[evolved]

Yellow needs LOTS of light to stay yellow.

 

[phantomreefing]

I encounter the same problem as well.

I traced the problem to two factors. Water and phosphates.

Luckily I work in a lab and I was able to test my rodi water, turns out that after filtration I was still getting 17ppm of Fe.

I added an additional canister and my Fe went down to about 5ppm.

I replaced my gfo and with the hanna checker my readings were undetectable.

My sps are returning to their original color.

 

[dangros]

Shouldnt the iron in your water be indicated by a non zero reading in the TDS measurement?

 

[All Delight]

0.03 for sps is fine dont add gfo that will only mess up the tank
This is all imo but what light do you have ?

agreed 100%.

 

[All Delight]

Also, some acros stay yellow regardless (assuming water quality is sufficient, yes it can brown out lol). I never seen a pink lemonade turn green. The pink Floyd is always yellow. The diabolic pacman is always yellow.