Pool filters
Pool Filter Cartridges
The cartridge is the consumable at the heart of a cartridge filter. Knowing when to rinse it, when to replace it, and how to match a replacement keeps your water clear and your filter healthy.
A cartridge traps debris in a pleated element. Rinsing restores most of its flow, but oils and fine particles gradually clog the pleats in a way a hose cannot clear, which is when a periodic deep soak or a replacement is due.
Replacements are matched by model and dimensions rather than brand alone. Keeping a spare on hand lets you swap and clean at leisure instead of leaving the pool unfiltered.
This page is a short orientation. A fuller write-up is on the way. In the meantime, see Pool Filters.
Related topics
- Cartridge FiltersHow cartridge filtration works and who it suits.
- Filter SizingMatch filter and pump to your pool volume and flow.
- What High Pool Filter Pressure MeansHigh pool filter pressure explained: how to find your clean baseline, what each pressure pattern points to, when cleaning fixes it, and what to check when it does not.
- When Should You Replace a Pool Filter Cartridge?Signs your cartridge needs replacing, the clean-vs-replace decision flow, and how to make the next one last longer.