Improved water quality Uses a natural process to continuously enhance tub water, helping to eliminate odors and deposits. Contains silver and activated carbon particles for maximum effect. Stylish and durable design Built with fine workmanship and quality materials to prevent cracking or leakage. Available in a stylish version that complements the look of your hot tub. Wide compatibility and performance Fits Type S1, Type VI, and MSPA FD2089 filters. Efficiently removes dirt and contaminants. Suitable for spas and hot tubs up to 500 gallons (2000 liters). With regular maintenance, water stays clear and healthy for 23 months. Value and convenience Reduces maintenance time and cost dramatically. Simply place the hot tub stick in the filter and enjoy clear water for up to 4 months, enhancing your spa experience. Use scenarios Routine home spa care for up to 500 gallons: insert the stick into the filter and keep water clear for 23 months with regular maintenance. Spa or hot tub rental properties: lowmaintenance filtration that supports consistent water quality with compatible filters. Seasonal or outdoor spas: longlasting filtration minimizes upkeep during periods of heavy use while keeping water clear.