Spa Filter Balls – The Alternative to Sand and Cartridges
Looking to simplify spa maintenance while improving water quality? Polyester filter balls are an effective replacement for both sand in sand filters and traditional paper cartridges. You can even place them directly in the skimmer. The result: crystal-clear water, less maintenance, and a long-lasting, cost-effective solution.
Why Replace Sand and Cartridges with Filter Balls?
Filter balls offer filtration up to 10 times finer than sand, while avoiding the hassle of paper cartridges. Just 700 g of filter balls replaces 25 kg of sand.
Main advantages:
- High-precision filtration down to 3 microns.
- Can replace sand in sand filters and cartridges in skimmers.
- Reusable for multiple seasons, easy to clean.
- Average lifespan of 1 year.
- Less waste and fewer replacements.
Also available in BlueWater version
The filter balls are also available in the BlueWater version. This enhanced variant is made with treated microfibers designed to improve retention of the finest impurities. More resistant to clogging, they offer increased durability and better water circulation. It’s an ideal solution for those looking to further reduce maintenance while extending the lifespan of the filter media.
Filter Balls vs Sand vs Cartridges – Comparison
| Criteria | Polyester Filter Balls | Paper Cartridge |
| Filtration efficiency | Down to 3 microns | 20–25 microns |
| Equivalent weight | 700 g = 25 kg sand | Light |
| Versatility | Sand + cartridge + skimmer | Cartridge only |
| Lifespan | 1 year | A few weeks |
| Maintenance | Washable and reusable | Frequent replacement |
Technical Specifications
| Specification | Details |
|---|
| Material | 100% high-strength polyester |
| Bag weight | 700 g |
| Can replace | Sand in sand filters and cartridges in skimmers |
| Filtration capacity | Down to 3 microns |
| Lifespan | 1 year (depending on use and care) |
| Maintenance | Machine or hand washable, no detergent |
Installation and Use in Your Spa
- Turn off the pump and open the filter or skimmer.
- Remove the existing sand or cartridge.
- Fill 2/3 of the filter tank or insert the balls directly into the skimmer.
- Replace the lid and restart filtration.
Easy Maintenance for Crystal-Clear Water
- Clean the balls once or twice per season, or when water becomes cloudy.
- Machine wash at 30°C without detergent; air dry only.
- Do not use boiling water or harsh chemicals.
- With frequent use, rinse them more often.
FAQ – Spa Filter Balls
How many filter balls do I need for my spa?
One 700 g bag replaces 25 kg of sand or one standard cartridge. Adjust the quantity depending on the size of your filter or skimmer, filling about 2/3 of the reservoir.
How long do filter balls last?
Filter balls last 1 year. They are washable by hand or machine, which avoids the need for frequent replacements like with traditional cartridges.
How do I clean my filter balls?
Simply wash them in the machine at 30°C without detergent or rinse them with clean water. Let them air dry completely before reinserting into the filter.
Do filter balls affect water pH?
No. Made from 100% polyester, they are neutral, non-toxic, and do not alter water balance. Suitable for all types of spas and pools.
