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Discussion Starter · #1 ·
I recently purchased a zoo rock with 30 polyps on it, a few of the polyps have opened, but most have not. There seems to be some red diatom algae on the polyps, and a turbo snail just started traversing the rock & polyps. Does this mean that some of the polyps are dead, or is this normal.

My tank is a 50 gallon corner ¼ cylinder, with 50 lbs LR & 4” DSB, 250 MH & I just added a Hydor Koralia 3 to the tank.

Thanks for any insight.

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