With some help from the board, I'm coming to the conclusion that my sand filter might be too small for our pool. I only get about 15 minutes of decent pressure when vacuuming and I can vacuum one day and have a bunch of dirt deposited the next day. As best I can estimate, our pool is around 11,000 gallons. The normal pressure on the filter is 10-12psi, but then it shoots to 20psi after about 15 minutes of vacuuming and I lose all suction.
The current sand filter is a Pentair 40D which houses 175lbs of sand. It's 2-3 years old, but was a home warranty replacement, so we didn't have any say (or knowledge) when it was replaced. It's being run by a 3/4 HP pump motor and the filter/pump are 29 feet from the pool. One skimmer and 3 return jets.
If this filter is indeed too small for our pool, I'm considering a new one. Any recommendations on the proper size sand filter? Any recommendations on sand vs. DE vs. Cartridge?
Thanks for your input.
The current sand filter is a Pentair 40D which houses 175lbs of sand. It's 2-3 years old, but was a home warranty replacement, so we didn't have any say (or knowledge) when it was replaced. It's being run by a 3/4 HP pump motor and the filter/pump are 29 feet from the pool. One skimmer and 3 return jets.
If this filter is indeed too small for our pool, I'm considering a new one. Any recommendations on the proper size sand filter? Any recommendations on sand vs. DE vs. Cartridge?
Thanks for your input.