Durso Style Drain Whistling

[Wayne]

Originally Posted by intarsiabox

Wayne, have you tried throttling down your return pump? I have tons of bubbles on the intake side of my sump but most are gone before they even get to the first divider. I was having lots of micro bubbles at first getting into the display tank but after tweaking the return pump discharge they all disappeared. My set up is nothing special, just a regular durso pipe with a hole in the top and then another 1/4" hole in the pipe just above the water surface (eliminates surging) and the pipe extends about 3" into the sump water.

Just did right now. Definate reduction in bubbles, I of course set it to max and then installed . Seems to help, did you ever get a draining sound when you had this tank?

[intarsiabox]

I did until I drilled the hole in the pipe just above the water line, after that it was quiet. Water does come out the hole though, so if you try it make sure the hole points into the tank.

[Wayne]

Originally Posted by intarsiabox

I did until I drilled the hole in the pipe just above the water line, after that it was quiet. Water does come out the hole though, so if you try it make sure the hole points into the tank.

Which water line? Was the hole in this flex line with the plastic screw in it? Cause I didn't know where this pipe connected to

[intarsiabox]

I think it was the line with the screw in it. It has a very course thread that I was using to adjust water/air flow but the screw is not needed. The line I drilled is the drain line from the DT just above the water line.