Tomorrow I should get some novus 1,2,3 to clean up the tank scratches. Meanwhile, I've been pondering plumbing/filtration.
This tank has two holes drilled in the back near the top. One has a PVC elbow on it that says "1 1/4 in" and the other one on the opposite corner is smaller, say 3/4". I was considering using a cannister filter like an eheim 2213 or rena filstar or such. But I have to work with the holes I have in the tank. I imagine that a 1 1/4" drain pipe is gonna pound the hell out of a cannister filter. So I don't know what to do. Am I destined for a sump? If so, is 9 gallons good enough?