Need help with pressure building up

Aug 25, 2015
29
ny ny
Inground salt water pool 25k gals , DE filter.

Just opened for the year, it's slightly cloudy but everything is balanced.

Standard running pressure is usually 10, but after 30 mins or so it goes to 15 and the pump basket water level drops by a quarter.

When pumping to waste it doesn't happen so I think it's filter side.

I've already cleaned the grids, water level is good, spider gasket was replaced, pump gasket replaced.

The only two things I have left to do is replace the grids (5+ years old) or replace the plumbing to the filter (it's the flexible pvc for hot tubs, and has a slight drip in 2 spots).

Any thoughts or input is appreciated
 
Your signature says "s240 hayward sand filter".

What grids are you cleaning?

Filter pressure rising if a sign of a clogged filter.

Post pics of your pool equipment.
 
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Your signature says "s240 hayward sand filter".

What grids are you cleaning?

Filter pressure rising if a sign of a clogged filter.

Post pics of your pool equipment.
Sorry that's the pool at my old house. I've since moved and now have a new pool. I think I self corrected by not adding enough DE. I was only running one scoop when I should be running two. Things seem better after 12 hours.
 
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