Deep breaths...We do want to be helpful on this forum, and I think it's great that you're coming here rather than just taking the first advice you hear. Unfortunately, pet stores propagate the feeling that it is easy to maintain multiple BPs together, directly or indirectly, simply because they are pet stores with limited space and they want to display animals for sale as efficiently as possible. Since it sounds like you've been bitten by the reptile bug, you might want to check out a rack system to replace your BP tanks, instead of a new tank. Animal Plastics has a pretty affordable economy line, or there are a lot of DIY threads on this forum.