Durso standpipe help

[blackz151]

I have an 80 gal DB rimless with a 50 gal sump. It seems like I can not get it just right. Im still getting a whole bunch of bubbles in the sock and it keep bubbling over. The over flow into the sump is pretty loud as well.

I have 3 1/4 holes in the cap and I placed regular ro line in them and it made it much quieter like williewilliams said it would. But I still get some flushing out of the over flow not crazy about 1/2 inch or so.

Do I still have to much flow? Isnt 3 1/4 holes a little much?

The over flow is a Durso stand pipe with 1 1/4 pipe into a 1 inch bulk head down though 1 inch pipe though a ball valve which is wide open into the sock. The whole pipe from bulk head to sump is only about 14 inches if that.

The Return pump is a eheim 900 GPD that I have turned about half way down with a gate valve. Is this to much flow still?

Should I try to close it down even more and then just use the power heads to make the flow

Any input would help I'm fresh out of ideas now.

[myram]

How is your drain line run to your sump? Does it stay vertical the whole time with no horizontal runs?

If you have any horizontal runs, it will create back pressure which will result in the flushing effect.

[blackz151]

No horizontal runs at all its a 45 out of the bulk head and a 45 into the sock

[blackz151]

Here is a picture of the setup into the sump