Spa Mineral Stick Parts, Spa in-Filter Mineral Stick for Hot Tub, Last for 4 Months, Pool Mineral Stick for Cartridge Filter, 4PCS - StepOK

• UPC   627666949711
• WATER PURIFICATION : Mineral sticks add trace minerals to the water and reduce impurities in the water, multi-layer filtration makes water more healthy, thus keeping the water clear and making you as comfortable as if you were in a pure natural spa SAFE MATERIALS : These well-made mineral sticks are made of ABS plastic, strong and odorless. The minerals contained inside will not cause any harm to the human body, safe and environment friendly, giving you a healthier life EASY TO USE : Just put mineral sticks directly into the spa filters or skimmers and let them do their work. The products come with a manual that provides you with detailed instructions and precautions for use WIDE APPLICATIONS : The spa accessories mineral stick suitable for hot tub for spa up to 500 gallons/1900L, suit for the most tub, outdoor swimming pools, hot spring pools, baths, spa pools, plunge pools and many more LONG LASTING : Can provide up to 4 months of service for your hot tub filter, and the maintenance cost is extremely low, helpful to save your time and cost, they are the right choice for you to effectively maintain water quality at low cost