Zoas not opening!

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thedrunkingpig

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ive 5 small colonies of zoas in my tank. 2 colonies were doing great for a while. now all don't open up as much. 3 haven't really opened.

a few of the colonies seem to be dying back as

the lighting and water flow hasnt changed.

dont know what to do.

I added a nitrate removal pad a month ago to help manage the nitrates, and it worked. but some werent doing so well before then either.
 
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ATP

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What kind of lighting do you have and what is your water parameters? Is there also any fish in there that likes to pick at them?

ATP,
 
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thedrunkingpig

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I have 2 T8 bulbs, not sure if the are HO. there are 2 clowns in the tank. the parameters are all in check. nitrate is between 0-5mg.
 
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ATP

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Are the t8 actinics? If so how many watts. I would appreciate if you could if avaialbe post your water parameters, but if they're all in check, your lighting might be in inefficient
 
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zeddy

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another problam could be water fluctuation if your water evaporates and water level drops you specific gravity will rise and corals don't like that, phosphate is also a problam peaple overlook.
 
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