My first summer with a pool. Thanks for the SLAM advice that really kept it clean all summer. Getting ready to close now. I noticed that my pressure gauge was reading zero, and that my looking glass was 2/3 empty and had no water flow. When i backwash I get water flow in there (i forgot to check the pressure during backwash), when i put it back on filter the looking glass empties out.
I have a hayward superpump single speed, and a hayward S200 sand filter. 3 returns, 1 skimmer, no main drain, multi-valve with the looking glass coming out the side and the pressure gauge coming out the side. i had the sand checked last year when i bought the house and they said it was good and had a few years left. The water still circulates at what appears to be its normal thrust from all 3 returns. The pump fills itself with water when its turned on, its not low or doesnt otherwise seem how it seems when there is air in the lines.
I am just trying to include as much random info as i can think that might be helpful. Please let me know how to proceed.