About a year ago, when I started my system, I received ample criticism for using 1.5" PVC
on my return pump. Many experienced hobbyists told me that using the wider pipe would increase head pressure and actually lower the GPH
of my return pump, thus 1" was preferable. I was also advised that using flexible nylon tubing was preferred to PVC
because it reduces sound and also head pressure. Having a little extra time on my hands this weekend, I upgraded my system taking these considerations to mind. I replaced my PVC
return using 1" braided nylon tubing.
My return seems to be running much slower as the water line in my sump is higher (with the same amount of water) and I had to turn the ball valve in my overflow to keep it from gurgling. The pressure on the loc-line return feels lighter and I think my pump is actually louder now. Does anybody have any idea what's going on?