The problem
The filter is what keeps the water clear. The pump pushes water through it and the cartridge catches dirt, dead algae and fine debris. When a filter is worn out, no amount of chemicals keeps the water looking right.
This was an older filter that had done its time, and it was ready to be replaced.
What I did
- 1Checked the pump, plumbing and filter before deciding to replace rather than repair.
- 2Removed the old filter.
- 3Installed a new cartridge filter with a pressure gauge on the lid.
- 4Reconnected the plumbing, started the pump and checked for leaks and pressure.
The result
A new filter doing its job, and a pressure gauge the owner can glance at. When the reading climbs above the clean starting pressure, it's time to clean the cartridge.
Clean or replace?
Most filters just need a regular clean. Replacement makes sense when the housing is cracked or leaking, the cartridge is falling apart, or the water won't stay clear even with good chemistry and a clean cartridge. If you're not sure, the free equipment health check covers the filter, pump and chlorinator.
