My overflow has still been all over the place. SO for documentation purposes so I can keep track of what Ive been doing. I’ve turned my return pump down from 5(max) to 3. Then increased my mp10’s from 50% to 60% power. I also added a small nano pump to the sump to mix things around and keep the top off the water from collecting crap. See how all this affect my nighttime overflow box fluctuation.



