Drain Noise problem

[triga22]

I have a 75 gallon reef ready tank. I just set it up today and it makes a lot of noise. The durso , I believe is not the problem. The air gets inside the tube and has no way of escaping and gets in my sump. It creates a lot of bubbles in the sump and is not quiet. Are there any solutions?
Thanks

 

[posiden]

I believe you are trying to run to much GPH for the OF.
How big is the stand pipe? 1"?
How many GPH are you trying to push?
Also How many 90's 45's T's and such. Each one of these creates restriction.

 

[triga22]

1
Roughly 600-Any less still makes lots of bubbles
None

 

[plumber]

Hi , Still a beginner here however my 90 gal had same problem .I extended return pipe into sump really quite now hope this helps. Good luck

 

[posiden]

How far under water does the drain go in the sump?

 

[triga22]

2 inches

 

[posiden]

What about a hole in the top of the durso? Is there one? If so how big, or have you tried to make it bigger?

 

[triga22]

Yes, It started small and I made it bigger. It dosent help.

 

[toomanytoys]

i had same issue and took a 1" pvc cap and drilled a bunch of 3/8" holes in it and put it on top of the intake ,now it is alot quieter

 

[pbnj]

Does the end of the overflow tube point straight down into the sump? It might help to attach a 90 degree PVC elbow to the end.