[ramseynb]

I would just “clean” the rock with a murIatic acid bath (do a search on how to do it). It’s no longer live rock and most likely just a phosphate bomb waiting to go off. It would be a poor way to start a new tank. I’ve done the acid bath before and i was amazed and all the brown nasty stuff that built up in the rock and how clean it was when the process was complete. Trust me on this, I recently screwed up and used some rock I thought I had cleaned but I don’t think I did after all. I’m now battling bad hair algae right off the bat.