thanks guys -
here's my status now: today i bought a Tetra "whisper", power filter 40. it says for both FW & SW. 210 GPH. It says Mechanical, Chemical, and Bio filtration, Looked like a good deal to me, got it for 50 bucks. But i wanted to get some input before i set it up? another question - ive heard ppl saying to remove the carbon from the filter, what is the reson for doing that? thanks again.