Cartridge Filter Cleaning Log

How the Cartridge Cleaning Log Works

This tool stores cartridge-filter cleaning records in your browser. Add the cleaning date, filter pressure before and after cleaning, the method used, and any notes about debris, algae, pollen, or unusual pool conditions.

After at least two entries, the log estimates the average time between cleanings and the average pressure drop after cleaning. The data stays on the device unless you export it as a CSV file.

Why Filter Pressure Tracking Matters

The clean starting pressure is more useful than one universal PSI number. Every pool system has a different normal pressure based on pump speed, plumbing, valves, filter size, and installed equipment.

Tracking pressure over time helps show when flow is becoming restricted, whether cleaning restores performance, and whether cartridges may need deeper cleaning or replacement.

When to Clean a Cartridge Filter

Follow the filter manufacturer’s guidance and compare current pressure with the clean baseline. A noticeable pressure rise, weaker return flow, reduced skimming, or equipment flow errors can indicate that the filter needs attention.

Common Cartridge-Cleaning Mistakes

• Cleaning by calendar alone instead of pressure and flow.
• Using a pressure washer that damages the pleats.
• Acid washing before removing oils and grease.
• Reinstalling cartridges with damaged bands or end caps.
• Ignoring a pressure gauge that no longer returns to zero.

Frequently Asked Questions

Why should cartridges be degreased before acid washing?

Acid can set oils into the filter media. Oils, sunscreen, and body products should be removed first with a compatible degreasing cleaner.

When should a cartridge be replaced?

Replacement may be needed when pleats are torn, bands are broken, end caps are cracked, cleaning no longer restores flow, or the pressure remains abnormally high.

Can I clean a cartridge too often?

Yes. Unnecessary handling and aggressive washing can shorten cartridge life. Clean when pressure, flow, or manufacturer guidance indicates it is needed.

Why is the pressure still high after cleaning?

Possible causes include incomplete cleaning, damaged media, closed valves, plumbing restriction, air problems, a bad gauge, or another equipment issue.