I am running a total of 26 tanks
here a some pics of my drain and fill system the on pic is not the clear but i modified a python got some 1/2 pvc fitting and made a "J" hook that i can hang on the side of each tank I also have 4 of these 4" in drains through out the fish room that all collect in my basement sump. One is also in the living room under my 90g through the floor to the basement sump as well.