I am seriously considering getting a new either 20 gallon high or 25 gallon regular tank. Both tanks have the same length and width dimension as my current tank, so I can still use my homemade canopy and stuff. Right now my 15 gallon is about 12 inches high, the 20 gallon high is 16 inches, and the 25 gallon is 20 inches. If I get a new tank, I think I am going to dump my powerheads and emperor filter and try to do an overflow/fuge setup. Basically I'm lost here. ANYTHING anyone has time to explain to me or suggest to me or any help at all you can give me would be GREATLY appreciated. Thanks as always guys!