Is there any way to test the flow of your pump? I have a 21" 200 lb. Sta-Rite sand filter with a 1 1/2 horse Waterford pump. I think that the suction of the pump stinks, and want to prove it. When vacuuming (manually) you have to go SUPER slow, so much so that it takes over an hour to vacuum. I'm using a 40 foot vacuum hose with a triangular vac head, and there is literally hardly any suction at all. Once the vac attachment is removed, if you put your hand in the skimmer basket with the pump on there is hardly a noticeable draw. The weir door is drawn in towards the skimmer and the pump is filtering. I'm not looking for a vortex in the skimmer, but I feel that the pull is inadequate. I have an inline chlorinator and an Aquluminator light in the return. My pump pressure is 10 pounds and steady. This is a completely new system but not my first pool. I guesss what I'm looking for is more pull through the vac head.