Spa & Pool Filter Cartridge Cleaning Guide
Proper filter cartridge cleaning helps maintain water flow, improve filtration performance, and extend the life of your spa or pool filter element.
For swimming pools, clean the cartridge when the filter canister pressure reaches 8 PSI above the initial system or new cartridge starting pressure. For spas, establish a routine cleaning schedule based on how often the spa is used.
When Should a Cartridge Element Be Cleaned?
Pool cartridge filters should be cleaned when pressure rises 8 PSI above the clean starting pressure. Spa cartridges should be cleaned on a regular schedule based on usage, water chemistry, sanitizer type, and how quickly debris builds up in the pleats.
Try the Aqua Comb Spa Filter Cleaner to help rinse debris from between cartridge pleats.
How to Clean a Spa or Pool Filter Cartridge
Remove the cartridge from the filter housing following the manufacturer’s instructions.
Use a garden hose with a straight-flow nozzle to wash down the filter element. Work from the top down, hold the nozzle at a 45-degree angle, and wash all pleats carefully, especially between the pleats.
Rinse until all visible dirt and debris are gone.
For spa cartridges, and for pool cartridges exposed to perspiration, suntan lotions, body oils, or other oils, soak the element for at least one hour. Overnight soaking is most effective. Use one of the following:
- A commercial filter cleaner
- One cup trisodium phosphate (TSP) to five gallons of water
- One cup dishwasher detergent to five gallons of water
Rinse the cartridge again to remove oils and cleaning solution.
If the filter has algae, calcium carbonate, iron, or other mineral buildup, soak the cartridge in a solution of one part muriatic acid to twenty parts water until all bubbling stops.
Rinse the cartridge clean and reassemble the filter housing.