[christyf5]

Yeah I knew you were doing the 8g water changes, I was just agreeing with you that a 2G would be a waste of time unless it were a really small tank.

So rock cooking is easy and doesn't involve any actual "cooking"
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Basically you'd remove the rock from the tank, scrub it and rinse it in saltwater, then place it in a rubbermaid container with new saltwater, a heater and a powerhead and put the lid on. Then every once in awhile (say weekly/biweekly) siphon out all the crud from the bottom and whatever has settled on the rock. Swish the rocks around in the water (and scrub if needed), remove the rocks, dump out the water and add new saltwater with the rocks. This continues on for a few months. I only cooked mine for about a few weeks but man I couldn't believe the amount of crap that came off my rock.