I have a pump that sits in my sump to return water to my display tank but I get small little bubbles coming from it. I have tried a prefilter on the intake of the pump, a second utube on my overflow box, Changing the the tubing. The tubing is secured by metal hose clamps and the water level is good???? Any imput would be great.... Thanks!
how is the water entering the return pump section? if bubbles are being caused by this water flow into the return section your return pump will pump those bubbles into your dt but they will be a lot smaller and a lot more of them!
Old Chinese proverb:
Don't go to bed with ichy bum
wake up with smelly finger!!