truehle
Member
I'm stumped. I have a 125gal DT with a newly setup DIY 33gal sump/refugium.
The overflow box is an Eschopps 1200, rated for 1000gph. There are x2 1" lines extending from the overflow box to my sump into a filter sock. I have the pvc extending about 3" below the water line. Each 1" line has x2 ball valve, x1 union coupling, and x1 ball valve. I should be able to get 600 gph each for a total of 1200gph max.
My return pump is a mag-drive 9.5. On the 1" PVC return line, there is 3.5ft of head pressure, x5 90 degree elbows, x2 union couplings, and x1 ball valve. From charts, I expected a maxium of 750gph through the pump when I derate due to head loss.
When I turn on the sump pump, the water very quickly lower in the return section, and within 10-15 seconds will start to pull air. The U-tube is completely filled with water, and water seem to be "generously" pouring into the overflow box. (There isn't suppost to be 2 U-tubes on this particular model is there?) I do get some surge and "burping" in the filter sock, but can that be limiting my flow that much?
Other info...In the sump, baffles are separated by 1", and bubble traps have the center baffle up 1" from the bottom. I'm also using a 200 micron filter sock.
Currently, I'm having to almost close the ball valve on the return line to prevent the levels from dropping. I'm at a loss.... Where do you think my flow is being restricted by that much???
The overflow box is an Eschopps 1200, rated for 1000gph. There are x2 1" lines extending from the overflow box to my sump into a filter sock. I have the pvc extending about 3" below the water line. Each 1" line has x2 ball valve, x1 union coupling, and x1 ball valve. I should be able to get 600 gph each for a total of 1200gph max.
My return pump is a mag-drive 9.5. On the 1" PVC return line, there is 3.5ft of head pressure, x5 90 degree elbows, x2 union couplings, and x1 ball valve. From charts, I expected a maxium of 750gph through the pump when I derate due to head loss.
When I turn on the sump pump, the water very quickly lower in the return section, and within 10-15 seconds will start to pull air. The U-tube is completely filled with water, and water seem to be "generously" pouring into the overflow box. (There isn't suppost to be 2 U-tubes on this particular model is there?) I do get some surge and "burping" in the filter sock, but can that be limiting my flow that much?
Other info...In the sump, baffles are separated by 1", and bubble traps have the center baffle up 1" from the bottom. I'm also using a 200 micron filter sock.
Currently, I'm having to almost close the ball valve on the return line to prevent the levels from dropping. I'm at a loss.... Where do you think my flow is being restricted by that much???
