I have 4 20 gallon tanks i need to filter. Since 2 tanks sit on shelves one above the other and the other 2 tanks on a shelf next to that. Could i have one tank over flow into the one under it and then have that tank overflow in a sump or wd?
If you have 4 tanks setup like in this picture, how would you filter them?
If you have 4 tanks setup like in this picture, how would you filter them?
