How to Clean Filter Cartridge

Aqua Comb Filter Cleaner

The best indication of a “soiled” filter cartridge in need of a cleaning is an increase in pressure within the cartridge’s housing canister or a visible decrease in the system’s water flow rate. Generally an increase in pressure of 8 pounds per square inch (PSI) or greater above the filter’s normal operating pressure (as prescribed in the manufacturer’s owner’s manual) indicates the need to clean the filter cartridge.

Why clean your Pool filter cartridge?
Our heavy duty polyester filter cartridge elements will show maximum longevity with proper care and maintenance. Not cleaning your filter cartridge often enough will shorten its life. Needless to say it will provide a bacteria friendly environment and leave you swimming in soiled water.When the pressure gauge on your filter reaches about 15-20 p.s.i. it is time to clean your pool filter cartridges. A good rule of thumb is to take the p.s.i. measurement with a clean pool filter and not let the pressure go 8 lbs. above the original reading.

Step 1

Turn the power off to your pump and relieve the pressure that has built up in the pool filter. Follow the manufacturer’s instructions to remove the lid of your filter

Step 2

Remove the cartridges from the canister and place in an area away from the pool or spa

Step 3
Power Blue Filter Cleaner

There are many filter cartridge cleaners on the market and use either a spray or soak method. Follow the instructions on the bottle. For stubborn stains, you may use TCP to soak. Do not acid wash your filters.

Step 4
Aqua Comb Filter Cleaner

Once the cartridges have been sprayed with the cleaner, use a garden hose, spraying from top to bottom at a 45 degree angle, removing all dirt, debris, oils etc. Rotate the cartridge to clean all sides. Do not use a pressure wash nozzle as that will damage the filter media

Step 5

Once all cartridges are rinsed thoroughly with clean water, place back in the filter canister. Follow the manufacturer instructions on how to safely close and restart your system.


A spare “stand-by” filter cartridge is an excellent investment. It provides convenience and a well maintained clean cartridge assures you that your filter will always be ready to operate at peak efficiency.

Pool does not recommend the use of diatomaceous earth (DE) with cartridge filters. DE Particles will become trapped in the body of the media and shorten cartridge life. If desired, a cellulose fiber (synthetic DE) can be used in moderation.

If you use Baquacil sanitization products, before using a commercial cartridge that is tri-sodium phosphate based, make sure to use Baqua Clean to rid your filter cartridge of the grey sticky film on the media that has formed as a result of the coagulant properties of Baquacil. If tri-sodium phosphate (TSP) or any TSP type cleaner is used prior to stripping the film, the cleaner and the gray film will combine to form a gum-like substance. Once this occurs, the substance cannot be removed from the media and the filter cartridge must be replaced.