smaller pump, still burping...

R

rocklymber

*sigh*
Well, some of you already know the problem I was having. I had a 1000gph return pump on my 105 gallon tank and the durso was burping. The general consensus was that the pump was too powerful, so I got a mag 7 and put it on there. The burping, though softer (more polite? :? ) is still happening. We're really at a loss. We've read everything there is to read about Dursos, and there must be something we're missing. Any help is greatly appreciated!
Thanks!
 
Burping is caused by the drainline being submerged too much, or the hole in the Durso is too small.

I think we've stated this before, so I apologize if your are hearing it again.
 
Just too illustrate Marc's point:

On my previous tank, I had DIY Durso overflows. I had a similar problem. I eventually drilled a 1/2" hole (or thereabouts) in the top of the cap, and worked in a short (1") piece of large tubing with a relatively large air valve at the top (I think it was 3/8", but I can't remember for sure). I found the air valve from That Fish Place or something similar and ordered as part of normal supply order. I then fired up the return pump and adjusted the valve until I got a quiet overflow with no burping. My guess is that it was almost fully open.

FWIW, James.
 
I got it fixed. I used the Dremel and enlarged the air hole. Doing good now.

Matt, I considered doing that when we had the problem the first time around. I still might just to cover that end of things as well.

Clark(the S.O.)
 
Congrats! Problem solved, and you're saving money on electricity with the smaller pump.
 
Spoke too soon. It's now started up with an annoying draining noise. Maybe I'm naive, but I thought this aspect was going to be a littler more plug and play. I haven't seen much space dedicated to problems like this in either references or forums.

Any ideas. Sounds like a stereotypical bathtub drain slurping sound. The water level is remaining constant though. There's no up and down or burping.
 
Would this help?

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Mine made the bathtub drain sound for quite a while. Number of visits to DNA and http://www.dursostandpipes.com later I had attempted a larger hole in the cap, an air valve in the cap, a tube with an air valve in the cap, a tube deep into the pipe and hanging in the overflow, etc., etc. where none of the fixes actually made a bit of difference.

It did get quiet a few weeks later after it built up the scummy coating inside the pipe though. Almost not noticable now.

There is a discussion of this noise on the durso site. It's the reason for the modifications section.
 
Thanks, Frank or Carla. I have been playing with it and it seems like there is no happy medium. I have been adjusting the hole size with tape and stuff for experiment's sake and if I cover it too much, it "burps". Uncover it a bit, it gurgles. :evil:

-Clark
 
if the hole is already to big go to http://www.dursostandpipes.com/ click on popular modifications and then Adjustable air hole modification. you will have better control adjusting with this then tape.
 
I went through a lot of effort trying to quiet the pipe. It did eventually quiet itself - fortunately as nothing I did ever had much effect. I think after it gets the scum coating inside it just stopped making the racket. Rather long few weeks though.


Frank
 
Thanks to everyone who responded. We really appreciate the help. I think we wrestled that bear to the ground. The noise is now at what I consider to be an 'acceptable' level. Now the new issue is the water rushing into the sump. It's one of the loudest noises on the tank, now that we have the top part under control. Any thoughts on the niagara falls into the sump?
:shock:
 
We've tried it at several levels in the sump; everything from high (6") above the water level, to where it is now (approximately 4") below the water level. This is the quietest it's been, but still nowhere near what I would call 'acceptable'. It's in the other room, and I am hard of hearing, and it's still loud enough to be irritating. It's just the sound of the water flowing into the sump. Is there any way to diffuse the water? Multiple openings to pour into the sump from? :?
Thanks for walking us through this, guys and gals!
 
It should be submerged .5 to 1" beneath the water's surface.
 
Victory! At last, I'm feeling like I'm smarter than a piece of tubing!
We cut off about 3 inches. With the way the pipe curves, this didn't really change the level that the pipe is under the water that much (about 2-3" now) and we drilled several holes into the bottom half of the pipe!
Bingo... no more splashing.
Thanks again to all who helped!
-Penny
 
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