The Unicel C-8325 is a replacement pleated cartridge filter element designed for select pool and spa cartridge filter housings. It’s built to capture fine debris while maintaining steady circulation when rinsed and cleaned on a regular schedule.
Key Features
Replacement cartridge filter element for compatible filter canisters
Pleated media increases surface area for effective debris capture
Rigid inner core and reinforced end caps for repeated cleaning cycles
Helps restore water clarity and reduce strain on the pump compared to running a clogged cartridge
Before You Buy
Match by part number (C-8325) whenever possible.
Confirm fit by measuring your existing cartridge:
Overall length
Outside diameter
Top and bottom end-cap style (open, closed, handle, or threaded)
Inside diameter of any open ends (standpipe opening)
If your filter uses a center standpipe, verify the cartridge’s inside opening matches the standpipe size and seals correctly.
Common Signs It’s Time to Replace
Pleats are torn, frayed, or separating from the end caps
Cartridge won’t clean up well even after a deep soak and thorough rinse
Filter pressure rises quickly after cleaning or circulation remains weak
End caps are cracked/warped or the core is collapsing
Related Products
Unicel C-8325 (Shop / Options)
Cartridge Filter Cleaner
Cartridge Cleaning Wands
Filter Tank O-Rings & Gaskets
Filter Pressure Gauges
Skimmer Socks (Fine Debris Pre-Filter)
Maintenance Tips
Rinse the cartridge when pressure rises about 8–10 PSI above your clean starting pressure (or when flow drops).
Spray between pleats from top to bottom and rotate the cartridge as you clean for a more thorough rinse.
Deep clean periodically to remove oils and fine debris; rinse thoroughly before reinstalling.
Let the cartridge dry after deep cleaning when possible—drying helps loosen fine debris for easier rinsing.
Keep water chemistry balanced to reduce premature clogging and scale buildup.
