Remove bacteria, dirt, slime and unpleasant smells from your hot tub, pool or spa using Pro-Kleen Hot Tub Filter Cleaner. With its unique antibacterial properties, it effectively kills bacteria and helps to prevent regrowth. It creates a breeding ground for undesirable and potentially harmful bacteria and promotes an unhealthy bathing environment. Designed for use in all hot tubs, jacuzzis, spas and pools - it does not cause damage to the internal system or the environment. Remove any loose debris from the filter body. Add 500ml of the solution to a container with 10L of warm water. Soak the filter in the solution overnight and rinse it off in the morning before using it again.