Clean Filter Cartridge Cleaner - Spa - It will clean your spa's filter cartridges quickly. It will remove debris, deposits and dirt embedded in your cartridges. Advantages: Keeps the water clean and clear Deeply cleans the filter Removes debris, dirt deposits Features: Number of tablets: 20 individual tablets Soaking time: 1 hour with 1 tablet Reference: AQN - 500 - 0065 Packaging: 1 x Clean Filter cartridge cleaner - spa Delivered in its original packaging