sparky0028
Member
Can any help me figure out the flow rate of a 2" bulkhead going down into the sump. I have a 960gph pump but I have to throttle the pump back so I don't overfill the tank.
flow rate
- Thread starter sparky0028
- Start date
sparky0028
Member
Sorry, should have given you more info in the first post.
Pump is a brand new Iwaki with a 1" intake and output. Head ditance is about 5.5 feet with 2 90 elbows total . Bulk head drilled into side of 150gal glass tank. Return bulk head also drilled into opposite side of tank and gravity fed into a 40 gal sump via a 2" hose into a sock filter.
Only able to run pump at about 2/3 pressure via ball valve. If I run at full I quickly overflow main tank. I recently drilled a 1/4 in. hole on top of return elbow in hopes of increasing water flow by eliminating air lock. Only increased flow minutely.
Wondering if 1/4 hole in elbow not enough, thinking about using a "T" instead of 90 elbow for return and putting a ball valve on top of "T" to control air flow. Or maybe "T" off return line and redirect and control additional flow back into sump.
Possibly purchase hang on Overflow from CPR and run side by side returns.
Would like to resolve this ASAP because I think restricting flow from my Iwaki is not a good thing for the pump as well as poor flow in tank although I have supplimented with internal power heads.
Thanks for the input!
Pump is a brand new Iwaki with a 1" intake and output. Head ditance is about 5.5 feet with 2 90 elbows total . Bulk head drilled into side of 150gal glass tank. Return bulk head also drilled into opposite side of tank and gravity fed into a 40 gal sump via a 2" hose into a sock filter.
Only able to run pump at about 2/3 pressure via ball valve. If I run at full I quickly overflow main tank. I recently drilled a 1/4 in. hole on top of return elbow in hopes of increasing water flow by eliminating air lock. Only increased flow minutely.
Wondering if 1/4 hole in elbow not enough, thinking about using a "T" instead of 90 elbow for return and putting a ball valve on top of "T" to control air flow. Or maybe "T" off return line and redirect and control additional flow back into sump.
Possibly purchase hang on Overflow from CPR and run side by side returns.
Would like to resolve this ASAP because I think restricting flow from my Iwaki is not a good thing for the pump as well as poor flow in tank although I have supplimented with internal power heads.
Thanks for the input!
sparky0028
Member
Unfortunaetly the overflow drain is drilled into the top of the tank, thanks for the help.