[ibefishy]

pyromaniac, i was wondering if you have tried to use any 45 degree elbows in place of some of the 90 degree ones to help with the flow? I was going to try to make one of the overflows that you made but thought of using the 45's instead of a few of the 90's. Also the little blue valve at the top, is that one of those little valves used to keep water from siphoning back into an air pump?