Originally Posted by The Grizz (Post 719061)

When the tank is running Mike, where is the water level inside the OF box? From my experience with the durso the top of the Tee where it meets the 90 should be just below the bottom of the teeth on the overflow and your water level should be about the halfway mark on the tee to 90 section. I also cut down the top of the tee as short as possible and have cut the 90 end facing down shorter as well.

Originally Posted by The Grizz (Post 719201)

The only other thing that bothers me about your durso Mike is the big valve you have at the top. When I built Adams ( oxymoron ) durso all it took was a very small hole drilled into the cap to get it perfect. I cant remember what size it was but it was super small, I started with a 1/16" drill bit and worked my way up until it was bang on.

What was the flow like thru the gate valve ? I like to have as much flow as my drain can handle more than anything.
These things are all interconnected, so does one have the flow set before drilling holes. I liked the adjustability of the valve on top for that reason, but if it maybe the issue then BYE BYE it goes.

What size pipe did you use for the durso? if you cant get it balanced I will send you a new Tee, elbow and cap. All you would have to do is drill the hole. I will see if I can get Adam to take a couple pics of his durso from the side.

I used 1 1/2" pipe and fittings. I will look and see if I have a cap to experiment with. That is one fitting I can actually find in Yellowknfe.

As for the syphon break, it is really strange that what you did there isnt working. A check valve would solve the problem but I am a little stumped.

I honestly think that the issue is that the bulkead is so low in the overflow, the siphon will not break until there is no water above that point. I will try lifting the elbow inside the overflow, but I am guessing that the siphon will still draw until the water drops below the bulkhead top enough to draw air thru the bulkhead.

Do worry about having all the water that passed through for sump going threw the skimmer. Most if not all systems are the same, not every drop of water goes threw the skimmer before it hits the DT again.

Originally Posted by ensquire (Post 719210)

Do or don't worry ?? :wink:

Originally Posted by The Grizz (Post 719211)

No sorry typo, DONT worry :lol:

Originally Posted by The Grizz (Post 720498)

Glad to here you got the Durso running a little better. It's hard to tell from the video how long the drain pipe goes into the sump but it looks to me as if the end of the pipe is angled a bit. What I have done with my drains is to keep them as straight down into the sump to within a few inches of the bottom & drill a bunch of 1/2" holes around the pipe that is under water. Doing this will help some of the air bubbles escape & decrease the turbulence of the water coming out of the drain.