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  • Ocean Pools

Choosing the Right Swimming Pool Filter: Sand Media, Glass Media, and Cartridge Filters

Filters are a vital part of the perfect swimming pool. With the right swimming pool filter, you can ensure crystal clear water at a price that suits your needs. Whether you're building a new pool or considering an upgrade, deciding which filter is best for you is crucial. In this guide, we'll explore three popular options: Sand Media, Glass Media, and Cartridge Filters.


1. Sand Media Filters:

Sand media filters operate on the principle of trapping debris through a bed of specially graded sand. As pool water flows through the sand, larger particles get trapped in the sand bed, allowing the cleaned water to return to the pool. Periodic backwashing, where water flow is reversed to flush out accumulated debris, is the main maintenance process for sand filters.


  • Cost-Effective: Sand filters have long been favoured for their affordability, making them a popular choice for many pool owners.

  • Low Maintenance: These filters are known for their simplicity and low maintenance requirements. Backwashing, a simple process of reversing water flow to clean the sand, is typically all that's needed.

  • Suitable for Large Debris: Sand filters excel at trapping larger particles, making them effective for debris such as leaves and twigs.


  • Fine Particle Limitations: When it comes to fine particle filtration, sand filters fall short. Smaller debris may pass through, affecting water clarity.

  • Regular Backwashing: While low maintenance, sand filters require regular backwashing, which can lead to water wastage.

2. Glass Media Filters:

Glass media filters utilise recycled crushed glass as the filtering medium. This crushed glass, with its porous and fine structure, efficiently captures debris as water passes through. Glass media filters boast superior filtration, creating crystal-clear pool water.


  • Superior Filtration: Glass media filters shine when it comes to filtration efficiency. Their fine particles capture both large and small debris, providing that crystal-clear water everyone is looking for.

  • Eco-Friendly: Made from recycled crushed glass, these filters are an eco-conscious choice, contributing to sustainability.

  • Durability: Glass media is durable and has a longer lifespan compared to sand, potentially reducing replacement frequency.


  • Higher Initial Cost: The initial investment for glass media filters tends to be higher. However, the long-term benefits may outweigh the upfront expense.

  • Specialized Cleaning: Some glass media filters may require specific cleaning procedures, adding a layer of maintenance complexity.

3. Cartridge Filters:

Cartridge filters employ a pleated polyester cartridge as the filtering medium. Pool water passes through the pleats, trapping debris on the surface and within the filter. Cartridge filters are great at fine particle filtration, providing a high level of water clarity.


  • Fine Filtration: Cartridge filters are renowned for their fine filtration capabilities, trapping even the smallest particles for superior water clarity.

  • Energy-Efficient: These filters operate at lower pressure, translating to energy efficiency and reduced wear on pool equipment.

  • Less Water Consumption: Unlike backwashing required by sand filters, cartridge filters require less water for cleaning, contributing to water conservation.


  • Higher Initial Cost: Cartridge filters may have a higher upfront cost compared to sand filters, though the long-term efficiency often justifies the investment.

  • Periodic Replacement: Cartridges need periodic replacement, adding a maintenance aspect. However, the frequency depends on usage and proper care.

Choosing the Right Swimming Pool Filter for You

When deciding which filter you go for, consider factors such as the size of your pool, your maintenance preferences and your water and energy consumption. Sand media filters, with their simplicity and cost-effectiveness, might suit those with larger pools and a preference for straightforward maintenance. Glass media filters, boasting superior filtration and sustainability, appeal to those prioritizing water clarity and eco-friendly practices. Meanwhile, cartridge filters, with their fine filtration and energy efficiency, cater to pool owners who are seeking precision and reduced water consumption. In the end, the perfect swimming pool filter is the one that aligns with your specific needs and preferences.


If you need a new swimming pool filter or are looking for a completely new swimming pool, contact Ocean Swimming Pools today:

01902 670717


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