Hi all - just finished filling a 20 high with RO water to act as an angel breeder. I have a standard and a gold that have paired off finally in my 90 and will put them in there. It's a bare tank, just a heater and (soon) gigantic sponge filter. Two quick questions - First ,I have the sponge filter running in my 90 now to seed the sponge with BB - about how long should I leave it in the 90 for the sponge to be appropriately colonized before moving to the 20? Also, anything I need to do to keep the bacteria up and running on it prior to moving the pair over? I was thinking of adding some stress zyme or something - should be soon when I move the fish over to it. Thanks!