This is our third season with this pool and it has been a very frustrating one! I have a constant amount of fine debris in the bottom of the pool. When I try and vacuum it out I can just see it coming back in through the jets after just a swipe or two.
The last two seasons I would see the jets stop flowing with a change in pressure and I knew it was time to backwash. This year they just keep flowing and you see a dark muck flow out of them. There is no change in pressure.
Hayward Sand filter
Multi position Valve-don't know which one though
Pump motor and impellor were replaced last year
Sand was replaced in 2010 just before we purchased the house
Do I need to dump in a lot of clarifier?
Do I need to change out the sand?
Is there something to look for in the multi valve?