Too Loud!

[Malexander]

So I finally got everything set up! But the problem is my overflow is making a major gurgling noise. How can I quiet that down? I'm attaching a picture, because mine is mounted on the back of the tank...not the bottom. Please help!

 

[Dayson]

is there only one drain hole? If so it will be just like turning a full 2 liter upside down. You would need to plump in a T to allow air to enter the pipe.

not to mention you will surely have a flood sooner or later if you do not have an emergency drain...

 

[Jerett83]

I agree. That's just asking for trouble.

 

[bundybear1981]

I would look at a durso style pipe on it. As others mentioned it is risky only having one drain. Should it clog you're likely to flood (especially if you have an ATO)

 

[Greybeard]

Don't know about flooding... if your sump's return compartment is not over sized, you should run your pump dry before making a mess. Easy enough to test... just block the overflow and see what happens

If you plumb a 'T' from the rear of the bulkhead with a bit of pipe going up to the tank rim, cap it, and drill a small hole in the cap, it'll help some... Inside the overflow box, use 2 street 90's so that the opening is facing down. Known as a 'Durso' style drain. It's still going to make some noise, but those two can help reduce it.

You can also do a 'reverse durso' at the sump end, allowing air to enter just before splashdown. Can help some.

I recently converted my durso style drain to a herbie style drain because of noise. Couldn't be happier. In your case, that would involve drilling another hole...

 

[Isaacs55]

I wouldn't be worried about the noise...I would be more worried about your tank overflowing and a whole lot of other problems. Your going to want at least 2 drains on your tank. Search Herbie method or beanAnimal design. More safety, less problems and no noise.