As an ozone company, you might expect us to tell you to turn on the ozonator and forget about sanitation. But we won’t do that. The DEL Ozone spa ozone generator in your spa is your powerful first line of defense against water contaminants, including dangerous micro-organisms. But it isn’t designed to take the full sanitation load.
Spa Water Balance Needs Sanitation Balance
We recommend the following prescription for pure, fresh spa water (and it’s the easiest prescription we know of that actually works):
- Keep a well performing DEL Ozone ozonator in your hot tub, with the pump running at least six hours per day (ozone is only injected when the pump is running).
- Maintain a low level of accessible chlorine (about .5 to 1 part per million) to provide background sanitation.
- Check the pH and alkalinity levels frequently — your chlorine works better in a pH balanced tub.
That’s about it. With routine filter maintenance and periodic water changes, you should be able to enjoy your spa time after time.

