Well the tank is running! Finished my sump Thursday night. Filled the tank about %75 Friday and threw a power head in for circulation. Added the sump Friday night and let it sit overnight just to be sure the silicone was cured. Saturday night I filled the sump and tank the rest of the way and turned on the return pump. No leaks and all was well! I still need to do some tuning on the Durso standpipe. I think I drilled my hole in the end cap too large. I also only used 1" PVC
for it and just now noticed they mentioned using 1.25". Not sure if that effects anything.
The water level in the over flow chamber is just under the top of the street-ell. The water level stays stable. If I turn up the flow on the return pump the water level will just rise in the overflow chamber but it will stop at a certain point and stay stable. This does make it more noisy though. To me it's not putting out that much water. I thought it would flow a lot more.
If I put my finger over the hole in the end cap slightly the way it is the water level will drop to around the middle of the street-ell which I read is a good thing. Then I might be able to turn up the flow a bit more? Let me know what you guys think about that.
I glued in the stand pipe and end cap. I think my only option would be to plug up that existing hole and drill a new one or maybe just put a little silicone to cover up half the hole?