To maximize the life of your filter cartridge:

• Clean the elements as instructed
• Do not use a stiff brush to scrub the media
• Maintain your spa water's chemisty
• Alternate two set of cartridges when ready to clean
• Use a type of enzyme treatment to break down oils

It's time to change your filter when:

• You notice shorter cycle times between cleanings

• You notice a lower water flow rate and higher differential pressure

• You notice a catastrophic failure such as a tear in the media or center core collapse