Acro lightening

[Fungia]

Some of mine acro lightening look light brown to white. Very pale looking. I try to feed more. But the Acro look more brown.
tested
CA 420
KH 7-8
NO3 nil in API
PO4 nil in API

I dose Vodka 10ml to my600L tank daily,my coraline stop growing.
tank 48x24x30in
1*250w BLV14kk
1*400w 20kk
1*250w Phnx14kk
4*40w 03actinic
running rowaphos 2teaspoon for 2 weeks change out.

 

[clkwrk]

in a nutrient poor system browns will be light tanish to almost white in color more like cream. Every wild figi SPS I have seen thats normally brown in other tanks are indeed cream.

Maybe you can try some additives like Tropic Marin coral elements to get more vivid colors.

 

[Horace]

That is alot of vodka IMO.....It is fairly common to hear of this happening when using vodka, especially if you dose alot which you do. IMO dosing vodka getting the nutrients low, but does not provide any other food source like Zeovit does. Because of that, instead of seeing your colors brighten, they start starving. I would suggest getting some of the Zeo Coral Vitalizer and Amino Acids. This should help add some low nutrient coral food and increase your colors. Your half way there I think Now you just have to find the balance between coral food/nutrient level.