10 microns – provides very fine filtration. It filters soft water with very little external pollution. You can use the 6 micron filter bag when your pool is relatively unused. It traps impurities for clear, limpid water and thus offers perfectly crystal-clear water. This bag requires regular maintenance and cleaning. 15 microns – recommended in season under normal pool usage conditions. It thus provides balanced pool water throughout the summer. Depending on how dirty the bag is, you can simply clean it with a jet of water. 30 microns – ideal at the start of the season for restarting your pool and during winterization. It can also be used for dirty, unbalanced pool water or to catch up on green water. This bag requires less frequent maintenance and cleaning than other bags. You can clean it simply with a jet of water, or put it in a washing machine without cleaning products/detergent at 30°C (maximum) Each product undergoes strict pre-shipment inspection to ensure it meets high-quality standards—you can shop with confidence. Should you have questions about product use, shipping or after-sales, feel free to contact us anytime—we’ll reply promptly. Your satisfaction is our top priority!