Re: Stockman overflow USERS

"John" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> I plan on implementing the Stockman overflow.  Use this link
> http://www.rl180reef.com/pages/standpipe/standpipe-ken_stockman.htm
> Does one position the overflow pipe submerged, partially submerged, or
> completely above the waterline AS IT ENTERS THE SUMP.
> 
> tia

The drain line from the overflow can be above, at, or below the water
line in your sump. Above produces zero back pressure and doesn't allow
air to build up and then bubble out with the associated noise. It also
tends to add noise from the water splashing as it enters the sump. At
the surface of the water is hard to do as the water level varies in
most sumps. When the drain line is at the surface you have low splash
noise with minimal air getting trapped and then burping. Below the
water level stops a lot of surface splashing noise. However it can
cause problems with air getting trapped in the line and building up
until it burps. The burp can cause significant noise. The way I have
handled this in the past was to install a tee in the line just above
the water level with the drain line going on down past the water line.
The tee allows the trapped air to escape without as much noise. You
may have to work with it some to keep the tee from introducing noise
of its own. All of the above will vary depending on the amount of
water coming down and the size of the pipe it is going through.

I hope this helps.
Raymond