How to Clean Hot Tub Filters

hot tub filter cleaning

Cleaning your hot tub filters improves their efficiency and helps maintain sparkling water.

You should establish a routine filter cartridge cleaning cycle based on the amount of hot tub use and the sanitizer you use. Cleaning hot tub filters every 2 or 3 weeks is the most usual routine.  If you use ecoONE you will probably find if sufficient to clean them monthly.

[NB: If you use Aquafinesse you will find it preferable to clean your filters at least weekly].

  • Remove the cartridge from the filter housing and use a garden hose, or a tap, to wash down the filter element.  Work from the top of the filter, with the water flow at a 45 degree angle, and wash all pleats, ensuring that you remove an debris stuck between the pleats.  Alternatively use our magic filter cleaning tools or, to make life really easy, try the brand new Blaster Filter Cleaner. Rinse the filter until all dirt and debris are gone.
  • Soak the filter cartridge for at least 1 hour (overnight is preferable) in a clean, suitable size bucket using a proprietary filter cleaner solution.  Our filter soak container will accommodate most filter sizes.  Alternatively use a spray-on filter cleaner and rinse thoroughly after 10 minutes.
  • If you want to make it really easy, place the filters upright on the bottom shelf of your dishwasher, place a powdered filter cleaner in the powder compartment and run the machine on a standard 50 degree wash cycle.   If you use a dishwasher you must make sure that your filters can stand vertically.
  • Rinse the cartridge again after cleaning to remove any traces of cleaning solution.
  • Always dry the filters before reinserting them back into your hot tub. This ensures that the filters perform optimally and last longer. Let them dry naturally, don't use artificial heat. It is a good idea to keep a spare set of filters and rotate them at each clean so that they can dry completely before reuse.
  • Finally, any grit or debris inside your filter compartment can easily be removed with a spa vacuum cleaner.

IMPORTANT INFORMATION FOR BAQUASPA USERS: Baqua Spa is a coagulant which combines bacterial cells and other small particles into particles large enough to be trapped by the hot tub filter.  The resulting deposit is a grey sticky film which can only be removed with a BaquaSpa compatible filter cleaner, such as Splash Spas Filter Cleaner.  Baqua Spa compatible filter cleaners are usually liquids. If any other cleaner is used prior to stripping the film, the cleaner and the film will combine to form a gum like substance which cannot be removed and your filter will have to be replaced.