EXPERIENCE POOL JOY!

May 5, 2025

Keeping your pool sparkling clean starts with a well-maintained filter system. Whether you’re a new pool owner or a seasoned pro, knowing how to clean a pool filter—especially a cartridge filter—is essential for clear water and healthy swimming. In Naples, Florida, where pools are a way of life, 239-POOL-JOY is your trusted local expert for pool filter cleaning, equipment repairs, and leak detection. This guide will help you understand why filter maintenance matters, how to clean your pool filter cartridge step by step, and when to call in the pros for help.

What Does a Pool Filter Do and Why Is It Important?

Your pool filter is the heart of your pool’s cleaning system. It removes debris, dirt, and impurities from the pool water, keeping it safe and inviting for swimmers. A clean filter ensures your pool water stays clear, helps pool chemicals work efficiently, and extends the life of your pool equipment. If your filter isn’t working properly, you’ll notice cloudy water, increased chemical use, and possibly even algae growth.

What Types of Pool Filters Are There?

There are three main types of pool filters: cartridge filters, sand filters, and DE (diatomaceous earth) filters. Each type of pool filter has its own cleaning and maintenance needs:

  • Cartridge filter: Uses pleated filter cartridges to trap debris. Easy to clean and popular in residential pools.
  • Sand filter: Filters water through a bed of sand. Requires backwashing for cleaning.
  • DE filter: Uses a fine powder (diatomaceous earth) to filter out even the smallest particles. Needs periodic backwashing and recharging.

In Naples, cartridge filters are especially popular for their efficiency and ease of cleaning.

How Does a Cartridge Filter Work?

A cartridge filter system uses a pleated cartridge to catch dirt, leaves, and small particles as water passes through. The pleats increase the surface area, making it efficient at trapping debris without restricting water flow. Over time, the cartridge fills with debris and needs cleaning to keep your pool filter working at its best.

When Is It Time to Clean a Pool Filter Cartridge?

Knowing when to clean your pool filter cartridge is key to maintaining a clean pool. Look for these signs:

  • The filter pressure gauge reads 8–10 psi higher than normal.
  • Water flow from the pool jets is reduced.
  • Pool water looks cloudy or dirty.
  • It’s been 4–6 weeks since your last cleaning (or sooner if you use your pool often).

If you see any of these, it’s time to clean your filter. Regular cleaning keeps your filter system running smoothly and prevents bigger problems down the road.

What Tools and Supplies Do You Need for Filter Cleaning?

Before you start cleaning your pool filter cartridge, gather these supplies:

  • Garden hose with a spray nozzle
  • Filter cleaner (or TSP/muriatic acid for deep cleaning)
  • Large bucket or trash can (for soaking)
  • Soft brush
  • Replacement filter cartridges (if needed)
  • Teflon or silicone lubricant (for O-rings)
  • Owner’s manual (for reference)

Having the right tools makes cleaning your filter easy and effective.

How to Clean a Pool Filter Cartridge: Step-by-Step

Cleaning your pool filter cartridge is simple if you follow these steps:

  1. Turn off the pool pump at the breaker to ensure safety.
  2. Release pressure by opening the air relief valve on top of the filter housing.
  3. Open the filter housing and carefully remove the cartridge. Inspect the cartridge for cracks or tears—replace if damaged.
  4. Rinse the cartridge with a garden hose, spraying at a 45-degree angle to get between the pleats. Never use a pressure washer, as it can damage the cartridge.
  5. For stubborn dirt, soak the cartridge in a bucket with filter cleaning solution, TSP, or muriatic acid (see next section). Soak overnight for best results.
  6. Rinse the cartridge thoroughly after soaking to remove all cleaning solution.
  7. Reassemble the filter housing, making sure O-rings are lubricated and properly seated.
  8. Turn on the pump and close the air relief valve once water flows steadily.

This routine ensures your filter system works efficiently and your pool stays clean.

Can You Use TSP or Muriatic Acid to Clean a Pool Filter?

Yes! For deep cleaning, especially if your filter cartridges have oils, algae, or mineral buildup, you can use TSP (trisodium phosphate) or muriatic acid:

  • TSP: Mix 1 cup of TSP per 5 gallons of water in a bucket. Submerge the cartridge and soak overnight. TSP is great for removing oils and organic debris without creating excess suds.
  • Muriatic acid: Use for mineral or algae buildup. Always clean with TSP first, then soak in a diluted muriatic acid solution (follow safety instructions). Rinse thoroughly before reinstalling the cartridge.

These methods help extend the life of your pool filter cartridge and keep your filter system in top shape.

How Often Should You Clean Your Pool Filter Cartridge?

How often you clean your pool filter depends on:

  • How often you use your pool
  • The amount of debris and dirt in your environment
  • The type of pool filter and manufacturer’s recommendations

Generally, clean your filter every 4–6 weeks during swimming season. Heavy pool use or lots of debris may require more frequent cleaning. Deep clean (soak) your cartridges at least once a year for best results.

What Are the Signs Your Filter Needs Replacement?

Even with regular cleaning, filter cartridges wear out over time. Replace your pool filter cartridge if you notice:

  • Cracks, tears, or fraying in the cartridge material
  • The cartridge feels mushy or loses its shape
  • Reduced water flow even after cleaning
  • The filter pressure remains high after cleaning

Using a worn-out cartridge reduces filtration efficiency and can strain your pool pump.

Why Trust 239-POOL-JOY for Pool Filter Cleaning and Leak Detection in Naples?

At 239-POOL-JOY, we’re Naples’ leading pool leak detection and equipment repair experts. Our licensed technicians have over 20 years of experience in pool filter cleaning, equipment repairs, and pool care. We use Leaktronics’ industry-leading leak detection equipment to find and fix leaks quickly, protecting your pool and saving you money on water and repairs.

We offer:

  • Expert pool filter cleaning and maintenance
  • Pool leak detection with advanced Leaktronics equipment
  • Equipment repairs and installations
  • Customized pool care plans for Naples homeowners

Trust us to keep your pool clean, safe, and ready for fun all year long.

Key Takeaways: Pool Filter Cartridge Cleaning

  • Your pool filter is essential for clean, safe pool water.
  • Cartridge filters are popular in Naples for their efficiency and easy maintenance.
  • Clean your pool filter cartridge every 4–6 weeks, or when the pressure gauge is 8–10 psi above normal.
  • Use a garden hose, filter cleaner, TSP, or muriatic acid for deep cleaning.
  • Replace damaged or worn-out cartridges promptly.
  • For expert pool filter cleaning, leak detection, and repairs in Naples, call 239-POOL-JOY.
  • We use Leaktronics’ advanced equipment for accurate, non-invasive leak detection.
  • Regular pool filter maintenance extends equipment life and keeps your pool sparkling.

Ready for a cleaner, healthier pool? Contact 239-POOL-JOY for all your pool filter cleaning and leak detection needs in Naples, FL!

Jeremy Bowles

Owner

Jeremy Bowles, the driving force behind 239-POOL-JOY. A dedicated father and husband, Jeremy brings his rich Texas roots and family values to sunny Florida. His journey from serving our country in the U.S. Navy to managing a top residential pest control company has equipped him with unparalleled service and leadership skills. Embracing his family's legacy in pool care, Jeremy launched 239-POOL-JOY, committed to delivering exceptional service. His passion for excellence shines in every pool project, ensuring the best care for your aquatic oasis.

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