Drilled 120 making noise

[Jester1026]

I recently upgraded from a 58 to a 120 and have noticed that the overflow on one side has started making the "flushing toilet" sound. Does anyone have ideas on how to make it stop?

 

[fort384]

Do you have a durso stand pipe for the drain?

Also, how far below the water line is the outlet for your overflow drain in the sump? If it is more than a couple of inches, it can cause some excess noise as the overflow line fills, burps, dumps water, fills, burbs, dumps water, etc.

 

[Jester1026]

There are durso pipes on both overflows and the lines are barely under the water in the sump.

 

[fort384]

Home made dursos? Do you have a hole in the top of the pipe?

 

[Jester1026]

They came with the tank. Both have holes. Should I make them bigger?

 

[fort384]

maybe, it could help. It won't hurt. If you post a pic, it may help determine if they are properly sized.

How is the tank plumbed? Is it flexible tubing from the bulkheads to the sump, or PVC?

I switched my tank from flexible tubing to PVC and it reduced noise substantially.

 

[Jester1026]

Flexible from union to sump.

 

[fort384]

yeah, hole looks big enough to me -

I would consider going to PVC with a 90 leg in there somewhere. It did wonders on my tank. You can wait for further advice though - some one might have a better idea.

 

[Jester1026]

Ok. Thanks for the quick reply.