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I have drained the tank and by scrubbing the rock I mean that I scrubbed off the zoos, macro algae, and star polyps. I am going to throw out the sand and by new. I'll keep posting and see how the rock progresses. I think te corraline might make it some of it is still quite purple and not bleached like the corraline on my glass. I have moved it to a bin with some water I had mixed. I just cant see throwing out 70lbs of rock. The rock is between 1-1 1/2 yrs old.
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