I am a new owner of an old pool (built in 93).
I never had a pool before so for me this is all new stuff.
My DE filter work psi should be between 10-20 per the manual.
When I backwashed it and it had no powder in it (well theoretically anyway) the pressure in it was 15psi.
Should I open the filter and clean the grids?
Also can I do it by myself ? is it a complicated task ?