micro bubbles from fuge drain

[Brando457]

I am experiencing micro bubbles coming from my fuge drain. The fuge overflow is a glass-holes 700 gph overflow and I am pushing maybe 300/400 gph through it tops.

I have the fuge draining directly into my return chamber, which feeds a manifold & the display.

Any idea to help eliminate the micro bubbles?

 

[rkaragozler]

If the pvc is not glued on, take it apart and drill to holes directly across from one another, use fish line and attach a chinese won ton soup bowl, this will keep the bubbles from flowing down. another you can do is drill a 1/2" hole just above the water level on the pvc, this will minimize the bubbles but wont get rid of them, or spin the return pump around the other way, so the input of the pump is away from the bubbles.