I took the plunge and did it. I was very nervous but I went a head and drilled a hole in my tank using a bit I purchased from Glass Holes. I did it in the front of the tank, in retrospect I probably should have drilled the very bottom. I am now having trouble finding the right kind of plumbing pieces and valves to finnish the drainage faucet. I have a 1 inch bulk head and the nut that goes on it but I am missing the rest. Can anyone else let me know what they have used in the past?