Doughboy 90 sq ft Pool Filter Replacement Filter
cartridge filter system · 1 cartridge
90 sq ft · 7″ OD × 26.25″ long
| Pleatco | PD90SL |
| Unicel | C-7409 |
Frequently Asked Questions
What filter cartridge does the Doughboy 90 sq ft Pool Filter use?
The Doughboy 90 sq ft Pool Filter uses the PD90SL (also sold as C-7409, all the same physical cartridge). Confirm the quantity in your owner's manual or by counting the cartridges in the housing when you open it up. Some Doughboy models in the same series use a different number of cartridges than others.
How often should I replace the cartridge in my Doughboy 90 sq ft Pool Filter?
90 sq ft is mid-size for a pool filter, which translates to about 12 to 18 months of service in typical residential use. Hose-rinse between the pleats every two or three months, soak in cleaner once a quarter, and replace the cartridge when cleaning stops bringing pressure back to baseline.
How do I clean the filter cartridge in a Doughboy 90 sq ft Pool Filter?
Turn the pump off and bleed the pressure from the filter tank (open the air relief valve at the top). Then open the housing and pull the cartridge. Hose them down at a 45-degree angle between the pleats, working top to bottom. For a deeper clean every few months, soak in a pool filter cleaner solution per the product's dwell instructions, then rinse before reinstalling. Don't use a pressure washer. The high pressure tears pleats permanently.