Your spa’s filter cartridge traps debris and particles in the water. Regular maintenance helps maintain proper water circulation and reduces the risk of blockages that can affect the pump. Here’s how to remove, clean and reinstall your spa filter cartridge.
How Often Should You Clean Your Spa Filter Cartridge?
Clean the cartridge every two weeks, adjusting this schedule based on how often you use your spa and the manufacturer’s recommendations. During each cleaning, inspect the pleats for damage, calcium deposits and oily residue.
Rinsing removes loose dirt and debris. If deposits remain, a deeper cleaning with a product designed for spa filter cartridges may be necessary.
How to Clean a Spa Filter Cartridge
1. Turn Off the Power
Before removing the cartridge, disconnect the spa’s power supply to prevent the pump or a filtration cycle from starting during maintenance.
Never operate your spa without its filter cartridge. Debris could enter the plumbing and damage the equipment.
2. Remove the Cartridge
Follow your spa’s owner’s manual, as the filter assembly and locking mechanism vary by model.
On models with a twist-lock filter basket, press down gently and turn the basket counterclockwise to unlock it. Remove the basket and any components covering the cartridge, then carefully unscrew and lift out the cartridge.
Keep loose objects and debris from falling into the filter compartment, where they could obstruct water flow.
3. Rinse the Pleats with a Garden Hose
Use a garden hose with a spray nozzle to flush out particles trapped between the pleats. Rotate the cartridge to clean the entire surface, gently separating the pleats as needed without bending or damaging them.
Use moderate water pressure. Avoid pressure washers or forceful jets that could damage the filter material.
Never scrub polyester filter pleats with a brush. Brushing can damage the fibres and reduce the cartridge’s filtering performance.
4. Deep-Clean When Needed
If the cartridge has an oily film, calcium buildup or dirt that remains after rinsing, use a filter cleaner compatible with your cartridge.
Follow the product’s instructions for dilution, soaking time and rinsing. Rinse the cartridge thoroughly after treatment, and follow the manufacturer’s guidance on drying before reinstallation.
Wear the protective equipment specified on the product label, including appropriate eye protection when handling chemicals. Never mix cleaning products.
5. Reinstall the Cartridge
Place the clean cartridge back into its housing, then reinstall the basket and any other components according to the manufacturer’s instructions.
Make sure everything is properly secured before restoring power to the spa.
When Should You Replace Your Spa Filter Cartridge?
Replace the cartridge if it is damaged or remains heavily clogged after proper cleaning. Torn or deformed pleats are signs that a replacement is needed.
Replacement intervals depend on the cartridge type, spa usage and manufacturer’s recommendations. Check your owner’s manual for the recommended schedule, and always choose a replacement cartridge that fits your spa model.
Need Help with Your Spa Filter?
Not sure whether your cartridge needs a deep cleaning or replacement? Contact Poseidon Pools and Spas for advice or help finding a compatible filter cartridge.
