I just put my two fishies into a HUGE divided 10 gallon tank. They were in two 2 gallon identical tanks that had undergravel filtration. I really liked the filtration and I found it extremely easy to clean. (And I never had to buy any filter cartridges!) The new tank has a big ol' filter hanging on the side of the tank that is pushing my fish around. I have heard lots of good things about these filters, but I think the fish liked the undergravel filter better. There were only a few bubbles at the top to compete with current-wise.
My question is- what do you use, have more experience with, and/or prefer? Any suggestions? Should I just stick with what I have, or should I consider switching the new tank over to an undergravel filter?
One more thing- Has anyone bought a "Zoo Med Floating Betta Log"? I saw them at Petsmart today and I almost got sucked into buying one... but then I was wondering if it was the biggest gimmick ever. Any thoughts?