Wadec
New member
Hello, I`m brand new here and new to fish tanks so I have alot to learn.I have a 100 gallen tank that i`m building, I want to put the overflow on the out side of the the tank on the back. The question is how many slots do I have to cut for it? I`ll make it go all the way down and put a Durso stand pipe in it. I have been looking at the ones that go inside and they seem to be sloted on three sides. So i`m not sure how many I need on the back. I`m building this in to the wall so space on the back is no problem. I was thinking on running two returns from the wet/dry, that I built as well, to the both top corners. I still don`t know what size pump I need but one problem at a time!:lol: Thanks!