Cartridge Cleaner Concentrate
Effectively clean filter cartridges of built up grease and oil with this Cartridge Cleaner Concentrate. It can often be useful to have a spare filter, so you can continue to use your hot tub whilst your filter is being soaked in Cartridge Cleaner.
You can find a video on how to use the Cartridge Cleaner Concentrate on our page on how to use chemicals.
Immerse your filter cartridge in a solution of warm water and Cartridge Cleaner overnight, and then use a domestic pressure washer or hosepipe to clean out any residue, including remaining calcium deposits between the fins of your filter cartridge.