I want to replace most of the live rock in my 29G reef with BRS reef saver dry rock. I know the rock will have to be cured before it can replace the old rock, so this is what I was thinking of doing. Rinse and soak the rock for a few days to get any dust or other matter off the rock. And then going to one of two routes: 1) Replace 1/4 of the rock in the tank at a time and work in sections, with about 1-2 weeks in between. 2) Curing the rock in a bucket with a powerhead for a month and just doing the swap all at once. I'm going to keep at least a few pieces of the old rock so I can have a source of coralline algae and to help colonize the BB onto the new rock. There is about 20lb of reef saver rock and will probably use about 10lb of my current rock as a base rock to stack the reef saver rock on top of.