I have another thread just below detailing the leak issues and priming issues I am having with a newly installed whisperflo pump. In my research on hear, I'm starting to think that I need a check valve installed to help keep water in the basket after the pump is shut off since the equipment is slightly elevated above the pool. I have purchased a check valve but don't know if it should be before or after the pump? The pump is leaking at the bottom, so until it gets fixed I will not be able to maintain prime but even when there are no leaks the water rushes back in the plumbing and out of the basket at shut off and takes a little time to prime back up. I assume that a check valve will help this. I have one check valve installed currently after the heater and before the chlorinator as it was instructed in the heater install. Attached is a picture of my equipment. Thanks!!