Common signs your pool filter needs attention include rising pressure on the filter gauge, cloudy water, weak return jets, and longer run times needed to keep water clear.
Cartridge filters should be rinsed regularly and deep-cleaned periodically. Sand and DE filters require backwashing and media replacement on a schedule. A pressure reading 8–10 psi above your clean baseline is a good indicator it's time to service the filter.
Regular filter maintenance extends equipment life, improves circulation, and helps your sanitizer work more effectively.
