Quick Answer
Okay so here's the quick version. Your pool water's cloudy and the pressure gauge on your filter is creepin' up because the cartridge inside is choked with gunk. We're talkin' dirt, suntan lotion, pollen, all that stuff. You gotta pull it out and give it a real good cleaning. First, a hard rinse with a hose, then a chemical soak to break down the nasty stuff you can't see. You can do it yourself for under $60 in supplies. But if that cartridge is old and permanently clogged, you're lookin' at a replacement cartridge, which can run you $50-$300+ for the cartridge itself, and potentially $125-$400+ if professionally installed.
Common Symptoms
Possible Causes
Step-by-Step Diagnosis
Step 1
Turn off all power to the pool pump at the circuit breaker.
Step 2
Check the pressure gauge on the filter tank. A reading 8-10 PSI above the noted 'clean' pressure indicates a clog.
Step 3
Slowly open the air relief valve on top of the filter to release all pressure from the tank. Wait until the gauge reads zero.
Step 4
Remove the tank lid or clamp and lift out the filter cartridge(s).
Step 5
Visually inspect the cartridge for tears in the fabric, cracked end caps, broken bands, or flattened pleats to determine if it can be cleaned or must be replaced.
DIY vs Professional Costs
| Repair Type | DIY Cost | Professional Cost | Time Required |
|---|---|---|---|
Basic Cartridge Rinse | $0 - $40 | $75 - $150 | 30-45 minutes |
Deep Chemical Soak | $20 - $60 | $100 - $175 | 1 hour + soak time |
Full Cartridge Replacement | $50 - $300+ | $125 - $400+ | 30 minutes |
When to Call a Professional Pool
- If the cartridge is visibly damaged (torn fabric, cracked end caps) and you're not 100% certain of the exact replacement model to buy.
- If you have thoroughly cleaned the filter but the pressure remains high or the pool water stays cloudy, indicating a different problem in the system.
- If you cannot get the filter tank to seal properly without leaking after reassembly.
- If you see any cracks or leaks in the main filter tank housing itself.
Prevention Tips
- Rinse the cartridge(s) with a garden hose every 3-4 weeks during the swim season to remove loose debris.
- Perform a deep chemical soak using a specialized filter cleaner at least twice per season to remove embedded oils and scale.
- Monitor the pressure gauge and clean the filter as soon as it reads 8-10 PSI above its clean pressure.
- Maintain proper pool water chemistry to prevent scale formation and algae blooms that can quickly clog the filter.
- Regularly skim the pool surface and vacuum the floor to reduce the amount of large debris reaching the filter.
Frequently Asked Questions
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