I switched out my little Intex pump that came with the pool to a Hayward VL series sand filter/pump. I had got a little Shark to help clean the bottom of the pool and that's why stepped up in size to a 1 HP. Now I have less pressure than before. Intake and return are both way down. My PSI gauge is at 4... My sight glass has about 3/8ths of a inch of sand in it. I have the filter sitting on a stand with the top of it approx 1& 1/2 feet below the water level. My neighbor came down and confirmed that I had everything connected properly.
Please help me! Sally