MEMKEY Spa Filter Lasts 4 Months, Cartridge, Pool Filter Cartridges, Spa Mineral Parts and Filter Cartridge for Pool and Spa, Spa Cartridge, Stick Pool

【HIGH-QUALITY MATERIAL】Our spa mineral pens are made of healthy and high-quality ABS materials, odorless and high-quality workmanship. Falls directly into the spa filter, keeps the water fresh and clear for a long time and ensures a natural and healthy spa. 【EXCELLENT FILTRATION SYSTEM】 The multi-layer filtration of the spa mineral filter makes the water healthier and can effectively filter a variety of impurities, keeping the spa water of good quality and your bathtub clean. 【EASY TO USE AND REPLACE】 Just put the mineral rod parts into your spa filter or skimmer basket and let them do their job, no other complicated operations are required. 2 convenient parts that can be replaced in time. (It is recommended to replace it every 3-4 months.) 【LOW MAINTENANCE EFFORT】Our hot tub filter cartridge can serve your hot tub filter for up to four months. The maintenance cost is extremely low, which helps you save time and money as you don't have to check or replace it for the next four months.