Can too much intensity cause Acros and milli's to lose color and turn green

[Dilan Patel]

So I have two corals that I have had for a while. One was a pink tabling acro and one was a blue tipped acro. They both have turned green. I am wondering if too much intensity can lead to a green color instead of the proper color? I turned down my intensity on my kessil a160's from 90 to 65 in hopes that my hypothesis is correct. Any ideas?

 

[Acrostick]

Good question. I was always told that acros turn green from high nutrients or low light. My sps system really isn't dirty. My po4 is .02 and NO3 is 3 to 5.
Interested to see what some of the gurus say.

 

[Anirban]

https://www.reef2reef.com/threads/prolong-effect-of-actinic-lights.313981/

 

[Shineymoose]

http://www.advancedaquarist.com/2009/1/aafeature1

Wherein Dana Riddle talks about the effects of light on coloration; the article may apply in this case, but I am unequipped to say so definitively.

 

[saltyfilmfolks]

In short. yes. it makes them green.

 

[JaimeAdams]

Ok, those much better versed in the subject than myself. Is the opposite true in instances as well. I think that we all know that in something like Red Planet that the portions of the coral exposed to less light is green while those exposed to higher light is red, so can this go both ways?

 

[saltyfilmfolks]

Ok, those much better versed in the subject than myself. Is the opposite true in instances as well. I think that we all know that in something like Red Planet that the portions of the coral exposed to less light is green while those exposed to higher light is red, so can this go both ways?

Yes. that follows along with Dana's convo posted above and the low light coral discussion. def look at that.
It seems to me however, that the deep water acros have a sensitivity to light. deeper water corals are producing "sunscreen" IMO, its often green. I turned some acros green, and oddly a ricordea. At the same time, my tricolor vileda, finally became tricolored again.