Hang on overflow box making noise? Shut it up!?

[ryangrieder]

My buddy just set his tank up. I gave him my old precision marine overflow external box. The big one where it has 3 layers in it to put media in it as well. It has dual bulk heads on the bottom on it. It's only a 75g tank so we blocked one bulkhead. The issue we have is it's being loud. Where the bulk head is, the top of it had a rubber pipe fitting. When the water flows down the bulk head, it obviously sucks air as well. So it's making that loud annoying sound. If i put any pipes on it with an angle facing whatever direction on it, it does not stop. What do you think would shut this the hell up? He currently has a t pipe on it which is a bit quieter, but when the water level flows up and down in the overflow and it goes to the t, it still sucks in air and water and make the flush sound...

I know some have that circle piece with a thin plastic straw in it to stop, but this one does not have it.

 

[ming]

Is it making like a toilet kind of sound? If so, you could try make a durso if there's enough room. I'm not sure how the old PM overflow looks like.

 

[Anthony.Luciano710]

they sell silencers. look on google for one.

 

[masterswimmer]

Ryan I'd like to see a pic or two. Ming's recommendation of a durso is the most logical, sight unseen.

R

 

[ryangrieder]

Durso huh, I knew there was a name but could not think of it. I'll tell him send me a pic tomorrow. it's pretty much just two bulk head tops, but the one side is closed, and the other has a piece of PVC pipe with a rubber tube fitting on it. I'm going to have to try to cut that piece out, cause it's glued in, but the durso thing seems like it could work. All I found previously when i was looking it up was some Maggie muffler thing...

 

[Anthony.Luciano710]

there was another overflow post by arati i think i posted how to make the durso out of a hang on overflow so if you check that thread out you can get a pretty good idea of how to do it.

Durso huh, I knew there was a name but could not think of it. I'll tell him send me a pic tomorrow. it's pretty much just two bulk head tops, but the one side is closed, and the other has a piece of PVC pipe with a rubber tube fitting on it. I'm going to have to try to cut that piece out, cause it's glued in, but the durso thing seems like it could work. All I found previously when i was looking it up was some Maggie muffler thing...