Setting ball valve on overflow

[Mbooker]

Hi

I'm setting up my first sump system for an aquarium. Just replaced the leaking bulkhead on the used aquarium I bought and am trying to fine tune my ball valve to quiet down the overflow from my display to the sump. As soon as I seem to get the system running quiet I notice the water level slowly rising in the display. Are there any tricks in getting it set right.

 

[jaws7777]

Can u swap the ball balve for a gate valve ? Would probably be a little easier to fine tune

 

[reefman]

Ive never had a valve on the over flow to fine tune it. Does the tank have a overflow box if it does make a durso standpipe that will make quieter

 

[JK47]

Would love to help. Can you please post pics so we know what we are working with?

The water is slowly rising because the restriction from the valve is choking it. That will eventually overflow the tank. I agree with J jaws7777 that a gate valve is the only way to fine tune.

 

[markstrimaran]

Split the flow to a grow out tank. Insert a removable restrictor orffice, mostly to keep nemo from getting jamed inside the plumbing.
This orffice will set the max full siphon gph. Then divert the excess flow into the grow out tank with a gate valve.
If you dont have any room under your tank for a valve.

 

[DN328]

Would love to help. Can you please post pics so we know what we are working with?

Before, you go off and make changes, this is important to know.

 

[Mbooker]

Sorry for the late reply. I stopped getting updates sent to my email.

This is my current set up.

No overflow box and I would prefer not to add one if I don't need to.

I've tried a few methods for getting everything running quiet but I'm still not happy yet. I ran all the plumbing at an angle to try and get rid of the freefalling water sound, and used flexible pipe on the bottom to avoid a sharp corner.

The quietest I've had it running was when I finally got the ball valve to restrict the flow the perfect amount to hold the water level even. I didn't like this method as I was worried a slight clog or anything getting caught inside would result in an overflow up top. I'm debating going back to this method and adding a second bulkhead and overflow with no restriction as a backup.

Original Set up:

 

[markstrimaran]

With out two tubes, one at full siphon. The other barely flowing. I

 

[markstrimaran]

If you reduce the flow from the pump, to maybe 200 gpm max, it should quiet it down.

Or drill another hole for an over flow tube. I have this 1" over flow, it' quiet. It' is only about 150 GPH. It is a single drain.

 

[DN328]

The drain basically isnt taking enough water when the ball valve is adjusted to create full siphon. As said above, perhaps slowing down your return to the tank and/or lower the intake to take on more water. Even with internal overflow box, I shorten my full siphon drain to be lower below water level so it wasn't sucking in air. This reduced noise and allowed more water to drain.