Zoas slowly dieng off
 

Hey guys i could use some help starting sometime last week my zoas in my frag tank have slowly been closing up and developing this brown film which is eventually killing them. I have tried dipping in Revive, Peroxide and even a lights out thinking maybe it was cyano or something but it hasn't help. Here is a pic of one of the colonies you can clearly see the brown on them. I have been blasting them with a turkey baster on a regular to keep the detritus off them. Any ideas what i could do would be great!

Water Para.
Alk 8.6
CA 430
Mg 1320
SG 1.026
P04 .004
Nit 10ppm

This is happening to mine too I was told it's because my tank is still pretty young it's 2 months old how old is your tank ?


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It's about a year old at this point

Looks like cyano, I tried everything before finally giving in to using Chemiclean. I don't like using chemicals to fix things but nothing was working, added flow, multiple blackouts, shortened light periods, less feeding, multiple water changes, I could not get whatever was out of synch back into synch. So I gave in and did a dose of Chemiclean and it has been gone since.

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