The round colony of zoas had a bad cyanobacteria coating on it.....so I treated it in a seperate tank with RedSlime Control, and it cleared right up. All the polyps in the colony opened and looked great. I put it back in the main tank(after a little fresh water dip) and this is what it looks like now. You can aalso see the green star polyps are closed also. Any ideas would be greatly appreciated.
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