Evans asked if there was another method other than split cage that would work, or had worked. I bought a wire hamster cage, and put it in the middle of the aquarium, after totally cleaning the tank so neither gerbil had left a smell. I put the one that I thought would be the more aggressive inside the cage, and let the other one loose in the tank. Then I alternated them twice a day for a week and waited for them to start snuggling up against the bars of the cage to sleep together. The drawback to this is that the cage has sufficient spacing between the bars to allow feet and noses to be bitten if one or the other is so inclined. In hindsight, I probably should have rewrapped the cage with smaller gauge mesh wire to insure the safety of both and if I am going to all that trouble, then I amy as well make a split cage divider! Namaste Cynthia __________________________________________________ Do You Yahoo!? Get personalized email addresses from Yahoo! Mail http://personal.mail.yahoo.com/