I have one small rock that all it has done is cause problems in my tank, it was the rock that started my
hair algae problem in my biocube 6 months ago and i scrub it every week and every week it grows back again. it also has hydroids and only 1 spot where it has nice corraline. It has 5 featherdusters but I hate this rock! any suggestions? I saw it growing hair algae in my new tank and i quickly removed it and stuck it in the sink, scrubbed it and dipped it in fresh water for a minute and its now sitting on my counter. What should i do with the beast rock?!