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Andrew7823
I bought a stone with palythoas today, put it in the aquarium, and after a couple of hours, two brittle stars started crawling around the aquarium and shedding their arms. The sea urchin came out from the rocks and was quickly moving back and forth (it had never done that before). The crayfish became somewhat lethargic, and Ksenia has shrunk and thinned out. Please advise on how to resolve the situation.