How To Maintain a Pool Filter

Keeping your pool filter in top condition is essential for clean, safe swimming, especially in climates as diverse as New Zealand’s North and South Islands. Regular filter maintenance not only optimises cleaning but also reduces strain on your pool system, ensuring it lasts for years. Here’s a guide to help you maintain sand (media) and cartridge filters effectively.

A Step-by-Step Guide to Pool Filter Maintenance

Step 1: Sand Filter (Media Filter) Maintenance

If your pool uses a sand or media filter, regular media replacement is crucial.

Change the Media Every Five Years

Sand or glass media gradually loses its effectiveness over time, especially with frequent use in warmer North Island climates or in the cool, rainy conditions of the South.

Replace the media every five years to keep your filter working efficiently and to reduce strain on the rest of your pool system.

Visit your local Poolwerx for expert advice on sand and glass media options to find what’s best for your pool.

Annual Deep Clean with Filter Cleaner

Oils and body fats, often from sunscreen, can build up in the sand media over time. Once a year, use a filter cleaner like Focus Filter Cleaner to remove this residue.

This annual treatment helps restore the filter’s cleaning efficiency, especially beneficial in areas with high summer pool use, such as in the North Island.

Step 2: Cartridge Filter Maintenance

Cartridge filters require a slightly different approach but are also relatively easy to maintain. Here’s how to keep your cartridge filter in excellent condition:

Rinse the Cartridge Every 1–3 Months

Remove and hose down the cartridge every one to three months, depending on use. In the North Island, you might need to clean it more frequently, given warmer temperatures and higher pool usage.

Regular cleaning extends the cartridge’s lifespan, ensuring better filtration and a cleaner pool.

Replace the Cartridge Element Every 18 Months

Change the filter element every 18 months to maintain optimal system performance, which is especially important in both hot, humid conditions and colder, damper regions.

For hassle-free replacements, visit your local Poolwerx, where you can find a range of filter products suited to DIY maintenance.

Step 3: Get Expert Advice for Maintenance Needs

Regular maintenance of your pool filter, whether it’s a sand or cartridge model, is key to enjoying a clean, inviting pool in any season.

To keep your pool filter in peak condition:

Contact your local Poolwerx to speak with experts about filter maintenance and to browse options for media changes, filter replacements, and installations.
Check out the rest of our DIY Problem Solving Series for additional tips and advice tailored to pool maintenance in New Zealand’s unique climates.

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