Cartridge pool filters use a pleated fabric or paper element to trap dirt, debris, and other contaminants. While they don’t require backwashing like sand or DE filters, the cartridge itself will need to be cleaned and eventually replaced over time.
The frequency of cartridge cleaning depends on factors like bather load, debris levels, and run time, but most experts recommend cleaning every 2-4 weeks during peak season. To clean the cartridge, first shut off the pump and relieve pressure in the filter. Then, remove the cartridge and rinse it thoroughly with a garden hose, making sure to dislodge any trapped particles.
If you notice the cartridge is still quite dirty after rinsing, it may be time for a deeper clean. Soak the cartridge in a filter cleaning solution or mild acid wash, then rinse it again. Avoid scrubbing too vigorously, as this can damage the delicate pleats.
After cleaning, inspect the cartridge for any tears, holes, or excessive wear. If the fabric is significantly deteriorated, it’s time to replace the cartridge entirely. Cartridges typically last 3-5 years with proper care, though heavy use may require more frequent replacement.
When installing a new cartridge, make sure it is the correct size and style for your filter model. Carefully insert the cartridge, ensuring it is properly seated and sealed. Run the filter for several minutes to allow the new cartridge to become fully saturated.
In addition to the cartridge itself, also check the condition of the filter housing. Over time, the interior can develop mineral buildup or cracks that may require professional servicing. Regular cleaning and inspection of the entire cartridge filter system will help extend its lifespan and keep your pool water sparkling clean.
Maintaining a cartridge filter takes a bit more hands-on work than other filter types, but the tradeoff is often better water clarity with less backwashing. Stay on top of the maintenance, and you can look forward to seasons of reliable, efficient filtration.