Overflow and Sump Question

Baldy · #1 04-07-2011, 11:51 PM

So i guess the amount that flows after the sump pump stops would depend on how much the water level is above the lowest point on the overflow intake. and that would probably depend on how much flow was going through it. anyone with cpr overflows (or others) can tell me how far above the bottom of the grooves of the intake box there water level sits when the pump is running?

Maverick00 · #2 04-08-2011, 12:16 AM

my cpr doesnt have the grooves your talking about but i try to keep the water level just above the intake so the surface of the water gets skimmed but at the same time doesnt create turbulence and produce air bubbles/pockets. It takes some adjusting to find what works the best. I found I have to keep the prefilter sponge at the back of the cpr as clean as possible (wash it every few days). If i dont the water level in the tank will slowly creep up as it starts to clog with debris and create more resistance for the water flow.

Added: Im using two pvc ball valves, one to limit the return pump, and one to limit the cpr outlet. That will give you full control of the intake and outtake. It was recommended to me in a previous post and has worked great.

Baldy · #3 04-08-2011, 02:58 AM

Would a filter sock in the sump be ok to use instead of the prefilter?

Maverick00 · #4 04-08-2011, 05:53 AM

you could try using both, i plan on trying a filter sock as well. Personally id leave the prefilter on to catch the debris before it enters your plumbing. Cleaning it takes less that a minute just running it under water and squishing it like a sponge. Its actually pretty amazing what it filters out being as porous as it is.