14 - How often should the water be changed ?

The frequency to change the spa water can vary due to different usage ways of the spa and different chemical balance of the water. If properly filtered and chemically balanced, no need to change the water through the whole summer season. The frequency to change water can be reduced by keeping the spa covered when not in use, testing the water regularly to ensure proper chemical balance, operating the pump for an adequate number of hours each day, keeping the filter pump cartridge clean, and replacing the cartridge when needed.