All I know is that 2 x 1" pipes should handle a 900 gph pump with no problem, one of my other tanks is an AGA 210 with drilled 1" overflows (x2) and I run a Mag-1800 pump by Supreme (1800 gph @ the pump). NO problems. Have you tried pushing something down the overflow lines?
Help! What am I doing wrong? Air in overflow pipe
- Thread starter frootloops
- Start date
MATTCB;3952085; said:
What do you mean by pushing something down the overflow pipes? I'm sure that nothing is blocking the pipes. It was just assembled.
Do you guys think that maybe it's because of all the elbows? Does it affect the flow rate that much?
Yes elbows affect the flow rate considerably. If you can use 45s instead of 90s it will help.
I have 2 1" overflows reduced to 3/4 before the sump with a pump able to do 1000 at my head with out any issues.
All of your overflows screw in right? Unscrew them and put in 2" pipes reduced to fit your 1" threads at the bottom. This will build pressure and increase flow.
I have 2 1" overflows reduced to 3/4 before the sump with a pump able to do 1000 at my head with out any issues.
All of your overflows screw in right? Unscrew them and put in 2" pipes reduced to fit your 1" threads at the bottom. This will build pressure and increase flow.
Slide air line down the overflow tubes. this will help with noise to.
Also if you had to turn off the pump to stop a flood you have to much water in the system. You should be able to run the sump dry or unplug the pump and not have the sump or the main tank overflow at any time.
Lower the drain pipes like 1/2inch to crate more room in the system. this way you can lower the water level and have room in the main tank for the water to go. The drain pipes will be at the water level no matter what so put them were you want the water level to be and only fill the sump up till the pump is covered.
Also if you had to turn off the pump to stop a flood you have to much water in the system. You should be able to run the sump dry or unplug the pump and not have the sump or the main tank overflow at any time.
Lower the drain pipes like 1/2inch to crate more room in the system. this way you can lower the water level and have room in the main tank for the water to go. The drain pipes will be at the water level no matter what so put them were you want the water level to be and only fill the sump up till the pump is covered.
frootloops;3952014; said:
I was just wondering that because you could have used the plugged return line as a temporary overflow to see is back pressure created by the elbows is truly your problem, the return line didn't appear to have all those 90 degree turns in it.
Dane;3952139; said:
I'm having a hard time finding 45 degree elbows here that are made of PVC.
Ill try to move the sump to the left side of the tank to minimize the length that the water has to travel. Then we'll see if the elbows and the long pipes are the reason for the slow flow rate.
