hey overflow experts- save my marriage!

[mark]

you should be able to get near silent with the only noise coming from where the water spills into the overflow chamber and where it enters the sump (gurgling).

When tuning mine, I just started with a small bit from my drill index going up in size until the water would stay at a constant height in the overflow chamber, then about one more size up. Was sort of neat how it went from the whistling to silent.

Each setup is different but for an idea I'm pushing 1000gph through 2-2" Dursos and the hole size is just a little bigger than 3/16" in each. These Dursos also worked when I had ~2000gph.

[iansfishy]

mark- are you talking about the hole in the top? or in the sides? my outlet right now is above the water level, going into a filter bag. It is a loud "suction/gurgling at the overflow, not the outlet. Thanks.

[mark]

Originally Posted by iansfishy

mark- are you talking about the hole in the top? or in the sides? my outlet right now is above the water level, going into a filter bag. It is a loud "suction/gurgling at the overflow, not the outlet. Thanks.

Drilling the hole in the top. Usually you see a Durso built with a Tee/elbow/cap and drilling the cap or like your picture but with a valve on the air line to regulate the air.

Once you get the right amount of air the water level in the chamber stays constant so there should be no sucking noise from the air hole or line and since the water inlet is always under water, nothing fr there either.

On the outflow, I have my lines just a little below the sump level in a filter sock. Just because of the principle of a Durso (air and water) I'll get some gurgling.

The only truly silent overflow I've seen or played with is a Herbie and that on both ends.

One of my Dursos:

[iansfishy]

ya mark. that seems to be the issue. it did quiet down alot. still not that quiet, but ill take what i can get. thanks alot foe your help.