crister13
Aquarium Advice Addict
Ok, I recently made a herbie overflow, but I have 2 overflow boxes. 1 drain in each, 1 return. I really have no idea how to do this because the water is still going down the other overflow when you close one a little. So height difference doesnt matter. I'm do confused about how to make a "silent" overflow with two boxes. Please please please help.
