redoing sump


New member
i am going to be putting together another sump for when i move and my only question is about the last baffle before the return pump. should the water flow over or under it? i am guessing over will help get rid of some more micro bubbles before being returned to the main?

Henry Bowman

Reefing since '87
Under it with a baffle that the water flows over a few inches before. This type of set up will greatly reduce the bubbles.