One thing that I suggest you purchase since you don't have anywhere else to put them is a Marina Hang-On Breeding Box either the large or medium size. All you need is a gang valve or another air pump which you may want to consider purchasing either way as a backup. Here is a link to Amazon medium size is available now Marina Hang-On Breeding Box, medium. One caveat that I had an issue with is I have rims on my 20 and a hood on my 55. If you have a rimless or a small rim on your tank than you should definitely get one especially if you want to breed more. I loved the design and idea of the Marina Hang-on Breeding Box that I purchased one 3 years ago and kept it till I got a tank that it would actually work on.