Does a spa with an ozonator need any chemicals?
Ozonators do sanitize water, but the process alone is insufficient for most bather loads. In most cases, the simple act of climbing into the water releases enough contaminants to overwhelm the ozonator’s efforts for hours. This leaves the spa unsanitized while in use. Maintain a chemical residual, however, and the spa stays clean even after guests drop in. Ozonators can reduce the need for chemicals in spas — and even in pools — but they cannot replace them.
