Thanks Ben, I really dont want to do the drain/refill. I just got my shut off valve installed between pump and filter, got psi reduced down from 17 to 10 and the flow into the pool has slowed. Will keep the chlorine up and run it like this and see what happens. At what pressure do you think it would be ok to try and add alittle DE to the skimmer? Cheapest I have found that stuff is lowes and they want $24 for a 24 lb box, I dont need that much lol