Reverse Durso to Quiet a Noisy Drain
26 May 2008A common situation with reef tanks is the drain plumbing dropping down into the sump, creating loud splashing noise as well as spray caused by water hitting water.
Generally, noise and splashing can be eliminated by submerging the drain pipe below the surface of the water. Putting a pipe straight under water, however, can create other problems such as flushing, trapped air that causes the water to drain in a noisy rush. It can also create a siphon which can cause the unintended draining of water when the pumps are powered off.
The solution is to create what is commonly referred to in the hobby as a “reverse durso”. I’m not sure of the spelling of this. I’ve seen it spelled both Durso and D’urso. I think it is someone’s name.
In this video, I show how I did some quick plumbing with pvc connectors commonly available at your home improvement store.
I’m no expert, but it works for me. If you know of any improvements I can make, please let me know in the comments.
