Poolzilla spa filter cartridge compatible with PWW50P3 7 5/8" x 6", 1½" SAE thread — 45 sq ft pleated Dirt‑Trap filtration

Poolzilla replacement spa filter cartridge compatible with PWW50P3 and Waterway 817-0050 provides 45 sq. ft. of pleated filtration in a 7 5/8" x 6" form with a 1 1/2" SAE bottom thread.

Keep your hot tub and spa water clearer and reduce strain on your pump with this Poolzilla-compatible filter cartridge. Designed to match the dimensions and connection of common OEM parts (notably PWW50P3/Unicel 6CH-940/Filbur FC-0359), the cartridge uses densely pleated media and Dirt-Trap technology to capture fine sediment, hair, and organic debris. It installs easily and cleans with a simple rinse — a practical replacement for routine maintenance.

How will this filter improve water clarity in my spa?

The Poolzilla cartridge uses high-surface-area pleated fabric that traps microscopic particles and larger debris before they recirculate. Cleaner filters let sanitizer work more effectively and reduce cloudiness.

• 45 sq. ft. filtration area captures more contaminants than flat media
• Dirt-Trap pleating holds particles inside the folds for easier cleaning
• Removes sediment, silt, sand, and visible particulates

Is this filter compatible with my PWW50P3 or Waterway hot tub?

This cartridge is sized and threaded to fit models that accept a 7 5/8" length, 6" diameter cartridge with a 1 1/2" SAE bottom thread, including PWW50P3-compatible units. It's a direct-fit aftermarket option for several OEM numbers.

• Compatible references: PWW50P3 (not PWW50P4), Unicel 6CH-940, Filbur FC-0359
• Also matches Waterway Plastics 817-0050 and related part numbers listed
• Poolzilla is an independent compatible replacement brand, not an OEM part

How do I clean and maintain the cartridge for best life?

Routine rinsing and occasional deeper cleaning extend filter life and preserve flow. The pleated media tolerates repeated washing; avoid harsh chemicals and replace after significant wear.

• Rinse with a garden hose after each heavy use or weekly in busy seasons
• Soak in a filter-cleaning solution monthly for oil and grease removal
• Expect 1–2 years of service with regular maintenance and proper handling

What should I expect for installation and fitment concerns?

Installation is straightforward: remove the old cartridge, inspect the housing and O-rings, then seat the Poolzilla cartridge onto the 1 1/2" SAE thread. Confirm gasket condition and correct seating to prevent bypass and ensure proper flow.

• Top has circular handle for easy removal and alignment
• Verify the 1 1/2" SAE thread and overall length before purchasing
• Check for housing debris and replace worn O-rings to maintain seal

Who this is for: Owners and service technicians who need a reliable, aftermarket replacement for PWW50P3-style spa filters will benefit most from the Poolzilla cartridge. It’s suitable for hot tub and spa operators seeking better particle removal, simpler maintenance, and a cost-effective spare without changing plumbing or fittings. If you run frequent spa sessions, manage a rental property with a hot tub, or maintain commercial wellness equipment, this cartridge balances filtration performance with easy upkeep.

Note: Poolzilla products are compatible replacements. Manufacturer names and part numbers are used for reference only; Poolzilla is an independent brand based in New Jersey and offers a 6-month return assurance plus a 12-month warranty against confirmed defects.