How to Clean Your Pool Filter Cartridge

How to clean your pool filter cartridge

Key Takeaways

Cartridge filters should be cleaned at least once a month to maintain water clarity and extend the filter's lifespan.
Always turn off the pump at the main power source before removing the cartridge — never work on pool equipment while it is running.
When hosing the cartridge, maintain a 45-degree angle to avoid damaging the pleats and flush debris out effectively — use a filter brush for stubborn particles.
After rinsing, soak the cartridge overnight in a filter cleaning solution to break down oils and fine debris that hosing alone won't remove.
Replace the cartridge every 2–3 years, or sooner if water quality is declining or you find yourself needing increasing amounts of chemicals to keep the pool balanced — these are signs the filter is no longer performing effectively.

For crystal clean water you should be cleaning your pool filter at least once a month. This article will give you a quick and easy guide to keeping your filter cartridge nice and clean, resulting in a longer life for your filter.

Cartridge filters will generally pick up a greater amount of particles and catch even the smallest of debris, than a media or sand filter. Unlike a sand filter, you cannot backwash the filter to rinse, saving water, though this means you have to manually remove the filter cartridge for cleaning.

4 steps to cleaning your cartridge filter

Turn off your pool pump from the main power source. You never want to work on your pool equipment whilst it is running, in case of injury or damage. Once turned off remove your filter cartridge.
Rinse off your filter cartridge. Maintaining a 45-degree angle to avoid damaging the filter and flush debris out of the pleats. For any hard-to-remove debris or particles, you can use a filter brush.
Submerge your filter with a filter cleaning solution. Usually mixed in with water, keep your filter submerged in the solution overnight. You can repeat this step if needed.
Rinse off!

When should you replace your cartridge filter?

You should replace your filter cartridge every 2 to 3 years but some circumstances may determine early replacement. Keeping your cartridge clean can prevent your cartridge from passing before its time.

Water quality and the pump pressure can be some signs to keep an eye on when determining if it's time to let go of your filter cartridge. If you notice you are having to use more sanitisers or chemical balancers to keep your pool clean and clear it's time to say goodbye.