Thanks for input Shelly. I've been reading up on going the bleach route and it seems like most people are using it to kill off algae and other hitchhikers. The rock I have has been sitting in a container(dry) for about 3 months. My reasoning behind cooking the rock is to get rid of any detritus and phosphate that has built up in the rock over the 8 or so years I've had it running in my tank(s). Did you find the bleach got rid of the junk deep within the rock? I would prefer using bleach over the acid as it seems easier.
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