Overflow drain noise, advice needed please!

[Rluka]

Hello everyone,

I have just started a new 75G with 40G sump, I'm using the megaflow overflow kit which comes with a durso drain, I'm using a 700gph return pump. There is a lot of noise coming from the water falling from the drain to the sump, and submersing the drain tube inside the sump causes a lot of bubbling noise.
Any ideas on how to reduce the noise level to the minimum?

Thanks

 

[Tobykourtney]

Put an elbow on the bottom of the drain and it should quiet down alot

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[Rluka]

Thanks Tobykourtney,
So do you suggest to submerse the elbow under the water? Or leave it at the surface?

 

[Tobykourtney]

I run mine submerged with an elbow but I'm only running 150-200 gph through my sump though.

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[jslmk4]

I put a ballcock valve on mine between the overflow and sump. Works well

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[Rluka]

Thanks,
I will try that.

 

[Rluka]

I put a ballcock valve on mine between the overflow and sump. Works well

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I have the ball valve on already, so do you mean that I use it to reduce the flow? what about the risk of clogging?

Thanks for the reply

 

[jslmk4]

Yes. I shut the valve a little at a time till the noise stopped and its been fine ever since. Unless a critter gets in there it should be fine. Mine has run this way for about a year now with no issues.

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[Rluka]

Yes. I shut the valve a little at a time till the noise stopped and its been fine ever since. Unless a critter gets in there it should be fine. Mine has run this way for about a year now with no issues.

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Great!
I'll give that a try.

Thanks

 

[jslmk4]

Cool.....Let me know how you make out.

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[Rluka]

Well, reducing the flow through the valve did the trick, however, I will still install the elbow as I think I need to reduce the splashing. The vaporization rate is quite high, I'm topping up daily with about 4-5 litters, is that normal?!
Another thing, I have just found a yellowish green fuzz on the glass, tubes, and in the sand, below are some pictures. Any idea what would that be?
My tests are all zeros and there are 4 chromis damsels, one royal gramma, 2 peppermint and a bunch of snails.

Thanks

 

[jslmk4]

Glad to hear you reduced the overflow noise. Your evaporation rate seems OK....I lose about 1 gallon per day. It your tank covered? Not sure about the fuzz on the glass though........some sort of algae maybe.

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