Water coming out of the tank makes loud noise...
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Old 09-30-2010, 02:35 AM   #1
Bubba_Shrimp
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Water coming out of the tank makes loud noise...


I just setup 90 gal with overflow box. The water that is coming out of the tank via Durso standpipe makes loud noise when it's entering the sump. It looks and sounds like water is boiling (lots of big bubbles).

The out line from the tank is 1" and inline is 3/4". Durso pipe has a hole on top and this is where air gets sucked in.

What do I do?
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Old 09-30-2010, 03:15 AM   #2
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It basically looks like this:


2x 90 deg elbows due to limited space inside and two valves. Drain valve if facing the side and actually goes to the bottom.
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Old 09-30-2010, 03:17 AM   #3
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I'm guessing that the "hole on top where air gets sucked in" is causing your noise. My internal filter I have contains an air venturi, and when I add this it makes alot of noise. I'm not sure if it's the same concept as yours but eliminating my air venturi made my filter more silent. All that I could hear is the water flow.
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Old 09-30-2010, 03:36 AM   #4
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Mine can make the same sound. I have a sponge similar to this, except that mine has a smaller cylindrical sponge that fits in the hole of the larger one. By adjusting how far the smaller sponge is inserted into the large one, I can eliminate any noise it makes.
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Old 09-30-2010, 04:19 AM   #5
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Is this a stock or DIY Durso Standpipe

Here is a little info {IMO: try to put a small air tube just enough to hole a check valve so that air can get out but not in }

http://www.dursostandpipes.com/make-...wn-diy?start=2
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Old 09-30-2010, 12:09 PM   #6
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Quote:
Originally Posted by Cboss View Post
Mine can make the same sound. I have a sponge similar to this, except that mine has a smaller cylindrical sponge that fits in the hole of the larger one. By adjusting how far the smaller sponge is inserted into the large one, I can eliminate any noise it makes.
Where do you put that sponge? I assume at the end of the pipe inside sump?

Quote:
Originally Posted by inkslinger View Post
Is this a stock or DIY Durso Standpipe

Here is a little info {IMO: try to put a small air tube just enough to hole a check valve so that air can get out but not in }

http://www.dursostandpipes.com/make-...wn-diy?start=2
standpipe needs air to be sucked in, otherwise the water from overflow chamber will be drained below pipe's intake and it will cause loud sucking noise. You sure about check valve?

Btw, I have a stock standpipe and the hole is about 1/4". I'll try to make it smaller somehow or use an air tube with those plastic air reducer valves...

I also read that having 90 deg elbows is no good. Maybe switching to 45 deg and use 3/4" tube instead of 1"?
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Old 10-02-2010, 03:23 PM   #7
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Adjusting air hole size on standpipe didn't help at all in my case.
However, this thing (I call it sump silencer) made it completely silent

The only 'noise' I can hear now is pump and water coming into overflow box.

I was playing around with different sizes of 'T' fittings and smaller ones were not enough as the flow into the sump is quite high. Finally, 3" one made all difference!

I'm sure somebody came up with this idea before. Basically it has reversed 3" 'T' fitting with 3" capped pipe where air accumulates and a hole on tope to release it. Water coming out at the bottom and all I can see very fine bubbles that do not make any noise at all.

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