overflow problem

Need a little help. When I turn off my main pump the water drains into my
wet/dry filter which is more like a sump now. However sometimes the water
level is to high and it overflows. What type of valve do i want to install
in my line to prevent water draining back down through my mag pump? The
overflow is ok because once the water drops below the overflow it stops.

On Fri, 14 Jan 2005 22:56:18 GMT, "Matt Levek"
wrote:

Need a little help. When I turn off my main pump the water drains into my
wet/dry filter which is more like a sump now. However sometimes the water
level is to high and it overflows. What type of valve do i want to install
in my line to prevent water draining back down through my mag pump? The
overflow is ok because once the water drops below the overflow it stops.



If it is coming down the return line you can drill a small hole in it
above the water line to break the syphon. Makes a nice ripple on top
as well. The stupid check valves will always fail at some point. The
hole can get clogged as well if it is not big enough.

"kryppy" wrote in message
...
| On Fri, 14 Jan 2005 22:56:18 GMT, "Matt Levek"

|
|
| If it is coming down the return line you can drill a small hole in
it
| above the water line to break the syphon. Makes a nice ripple on
top
| as well. The stupid check valves will always fail at some point.
The
| hole can get clogged as well if it is not big enough.
|
|
Yep, good call. I always make 2 holes, because Murphy's Law says
that a snail will be parked on the hole when the power goes out and
nobody is home. I have had this happen, it's not just a dumb theory.
g

I drill it below the water line to avoid creating
microbubbles at the return outlets.

Marc

kryppy wrote:

If it is coming down the return line you can drill a small hole in it
above the water line to break the syphon. Makes a nice ripple on top
as well. The stupid check valves will always fail at some point. The
hole can get clogged as well if it is not big enough.




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On Sat, 15 Jan 2005 03:51:01 GMT, Marc Levenson
wrote:

I drill it below the water line to avoid creating
microbubbles at the return outlets.

I've not experienced that. I get flow out of the hole. Nothing goes
in.

When I had the hole under the water line it kept getting clogged with
green stuff.

You can't beat the ripple on the surface, especially if you have
halides!!




kryppy wrote:

If it is coming down the return line you can drill a small hole in it
above the water line to break the syphon. Makes a nice ripple on top
as well. The stupid check valves will always fail at some point. The
hole can get clogged as well if it is not big enough.

also you can rase the out feed hose so its not so deep in the tank that will
also help. but I must sat I like the hole drilling idea also

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"Matt Levek" wrote in message
...
Need a little help. When I turn off my main pump the water drains into my
wet/dry filter which is more like a sump now. However sometimes the water
level is to high and it overflows. What type of valve do i want to
install in my line to prevent water draining back down through my mag
pump? The overflow is ok because once the water drops below the overflow
it stops.