I have a 4 year old Pentair FNS Plus 60. I maintain my pool but have a pool guy clean the filter every year. After a cleaning 2 years ago, the filter has been leaking DE every time I backwash or get the filter cleaned. The DE comes out of the return jets.
The pool guy says he's checked the grids and doesn't see a tear.
Should I just bite the bullet and replace the grids even if there are no visible tears? Is there anything else it could be? I'm thinking that since the leak started after the cleaning done in 2020, the guy must have torn a grid while cleaning.
The pool guy says he's checked the grids and doesn't see a tear.
Should I just bite the bullet and replace the grids even if there are no visible tears? Is there anything else it could be? I'm thinking that since the leak started after the cleaning done in 2020, the guy must have torn a grid while cleaning.