I am starting a tank with mostly a bunch of dried out live rock, and was wondering how I need to clean it. My lfs told me to soak it in salt water for 3 weeks, swishing it around every once and a while, then change the water and soak it for another week to rehidrate any crap that was in there so it wouldnt rot in my tank. Only one problem, I am trying to save money so making 8 gallons of saltwater and dumping it down the drain seems like a waste to me. I have been soaking it for a week or so in freshwater straight from the tap and was wondering if dechlorinated water is good enough to soak it in. It is outside in a cooler (closed) but is still growing some green algae so i put it in my shed where it would get less light. So is it nessesary to soak it for 3 weeks in salt water? or can I just use freshwater? OR also, is there any other way to clean it? THis is an emergency because I really want to buy the salt today if I can...