noisy overflow, cut teeth?

Valgae · Jan 28, 2014

Tank plumbing is done. Using the bean animal overflow. It is as claims-completely silent. Except for the overflow box. Thinking about cutting the teeth off or down. Doing so will bring the water level down about 1/4". The waterline will still be hidden. Will this help the noise?

Spsnut · Jan 28, 2014

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I cut mine down. I run full syphon either modified Herbie or bean depending on how much water I want to pump. You're probably running a custom overflow box not a stand like I; I run open bulk heads at the bottom for the syphon with standpipes for the back ups. I need to keep the water high in the boxes or the water falls too far and makes noise.

Valgae · Jan 28, 2014

BAM!! LOL! Ok doing this thurs. Thanks.

KoleTang · Jan 28, 2014

Not sure how cutting the teeth will fix this. Why not just close the gate valve a bit to raise the water level in the box?

Spsnut · Jan 28, 2014

I cut mine because I knew that the stock slotted weir wouldn't handle my pump, and I prefer an over the top.

Jimbo662 · Jan 29, 2014

KoleTang said:
Not sure how cutting the teeth will fix this. Why not just close the gate valve a bit to raise the water level in the box?

+1...I did this on my new tank and it definitely reduces the noise. I won't go away completely but you can get it pretty quite.

Bad Company · Jan 30, 2014

I got my overflow to be completely silent with a bean-animal. You need to do two things:
1. Raise the emergency pipe to be even with the bottom of the slots (or maybe 1/8" taller)
2. Close the gate valve on the main siphon drain to raise the water level to almost the bottom of the slots.

Now you don't have a loud high pitched "trickle sound", and you can clearly hear your wife complain about the stinky tank! the noise comes from the streams that come throught the gaps falling too far to the water surface.

Yay!