Noisy Return Line?

[texhorns98]

I've had problems in the past with noisy drains, but never with a return. Funny enough, it's only the right side doing it! I THINK the gurgling is coming from the water coming out of the siphon break mixing with the water draining into the overflow box from the notch.

I swear these overflows are different heights or something. Filling up the tank, the right overflow filled up faster than the left! I also noticed when I took a level to the tank once it was in place, I was off. Then I placed the level IN the tank and it was perfect. I guess the trim must be a tiny bit off?

 

[mrflameangel]

I have double drains on mine also. My sump is closer to the right side. So my left side drain began to do the same thing. I have ball valves on each side. The left one is wide open. I adjusted the right one until the noise was gone. I have not had a problem since.

 

[texhorns98]

Weird. My sump is directly below the noisy one!

 

[mrflameangel]

Mmmm..... Ok that has got me

 

[texhorns98]

Further investigation has shown it IS the drain pipe. It's sitting right at the water line and I need it to be 1/4 in lower. I suspected the return because when I removed it, the noise stopped. Duh, the loss of head pressure caused the water to rise and cover the drain holes!

 

[mrflameangel]

At least you found it.

 

[texhorns98]

Rather than trying to shorten the standpipe, what about plumbing in a ball valve to slow down the drain?

 

[mrflameangel]

That's what I did. Here is it is from left side of the tank to the right.

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Of course the larger of the 2 is the drain.


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[rdnelson]

Ball valves in the drain can be dangerous. I have them in my bean animal but one of the three drains will only have water in emergency situations so I feel safer. But, if you have two drains and need both to keep up with the pump, on snail can cause some pretty wet floors.

 

[mrflameangel]

Oh yes i am doing a slow flow through my sump So my pump is under rated for my over flows

 

[texhorns98]

Yeah, I'd have to run the headloss, but I'm using an Eheim 1262 and I have two 1" drains.

 

[mrflameangel]

I love my ehiem 1260.

 

[texhorns98]

Problem solved! I plumbed the ball valve, but the noise was STILL there even though the water level inside the overflow was raised. I carefully compared the two sides since the left is completely silent. Yeah...I had the U-shaped piece on backwards, so the airtube was in front. DOH!

 

[containerman1]

Glad you figured it out. That noise gurgling will drive ya nuts.