Humming Noise from Return Pipe

[RedStar]

Have quite loud humming noise from my durso return pipe(1 1/2 inch), any bros have any shifu tactics to cure the humming noise?

It could be the air/water mixture not right. Maybe changing the size of the small hole on the cap on top of the durso may solve the humming noise?

[RedStar]

Correction: Should be Overflow Pipe...

[sunny03]

Correction: Should be Overflow Pipe...

any pic to show ur durso pipe... and the end part where the water goes into the sump...

Is that part submerge in water ? search RC forum as there would have answer there.

[DUCADOS]

All along with the noise or recently only?

Check any object stuck inside there?

Pic will definitely help in solving your case.

[bkburger]

Correction: Should be Overflow Pipe...

Hi, mine also have this problem but cant solve it, it should cause by having AIR inside that cause it.

[CFOh]

Have quite loud humming noise from my durso return pipe(1 1/2 inch), any bros have any shifu tactics to cure the humming noise?

It could be the air/water mixture not right. Maybe changing the size of the small hole on the cap on top of the durso may solve the humming noise?

Pls find similar discussion on same topic below, hope can get some clue there:

Cheers and Happy Reefing...