The tank is clear after adding the sand. Now I am noticing something I do not like seeing. The entire tank is full of microbubbles coming from the sump return. What could I do to stop this? I have redirected the flow and that did not help any.
Hara said:What does cavitation mean?
That's not the line I was talking about. I meant the return from the main tank to the sump. It should enter the sump submerged. Have a look in the sump with a flashlight and look for small bubbles in the area of the pump intake. Although the sump is baffled, it may not be adequate or efficient. It still may take a little customizng to get it right, especially when dealing with high flowrates.The line is totally submerged. It is a straight 6 inch shot from sump to pump.