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Cyanobacteria

cyanobacteria
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Cyanobacteria

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Hello my name is Jay and I have a question about a black slime that has been killing certain zoanthid colonies that I purchased from a guy. The zoos came poorly insulated and were cold. Most rocks survived but 2. They keep getting this black slime that starts on the rock as slides onto the polyps. It has killed about 60 polyps on 1 rock and wiped out the other. I have been doing coral dips with Seachem’s coral dip. Its mostly Iodine concentrate. This seems to help temporarily but the black slime will just reappear a couple days later and if I don’t dip the rock the slime will kill polyps.

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