Zoa trouble?

[wec]

I recently set up a 57 g tank with about 65 lbs of live rock. Been setup for about 4 months. I have a skimmer and running gfo and carbon. My water quality is doing ok. But I can't understand why some of my zoas are doing alright and some seem to be dying. I have bought 4 frags of zoas with about two polyps on each. The two thatdo really like and have alot of color , hardly ever open and if they do their skirts are inverted. Or part of there skirt is folded onto itself. The other two without much color are fully extended and seem to be doing fine. I have some totally yellow ones that are even spreading to nearby rock. But the candy apple red and rainbow zoas are not doing good I don't know what to do? I've tried different spots in the tank. But no luck. I've even moved the other zoas that are doing good around. And they seem to be happy anywhere.

 

[DanRhomberg]

I recently set up a 57 g tank with about 65 lbs of live rock. Been setup for about 4 months. I have a skimmer and running gfo and carbon. My water quality is doing ok. But I can't understand why some of my zoas are doing alright and some seem to be dying. I have bought 4 frags of zoas with about two polyps on each. The two thatdo really like and have alot of color , hardly ever open and if they do their skirts are inverted. Or part of there skirt is folded onto itself. The other two without much color are fully extended and seem to be doing fine. I have some totally yellow ones that are even spreading to nearby rock. But the candy apple red and rainbow zoas are not doing good I don't know what to do? I've tried different spots in the tank. But no luck. I've even moved the other zoas that are doing good around. And they seem to be happy anywhere.

first thing is to post your water parameters...(levels)???

what are you testing for?
How often water changes and what %???

 

[MUCHO REEF]

I agree with Dan. Please share as much as you can. Please see the link below.

http://www.reefcentral.com/forums/showthread.php?t=1852463