Depending on how many fish you plan to house, I think one or two larger tanks (10 gallon, 20 gallon long, 40 gallon long, etc.) that you can divide into multiple segments would be a lot more cost-effective to buy, set up, and maintain than a whole bunch of little tanks. Seriously, some brand new 2.5 gallon tank kits with cheap quality filters and hoods cost almost as much as or more than some plain glass 10 gallon kits I've seen. And think about how many heaters and other miscellaneous supples you would need for them all. If you look around, you may even be able to find decent used tanks for practically nothing.
Last edited by Fenghuang; 03-31-2013 at 01:30 PM.