Hot Tub Question

[DaveD]

If you were running bromine - what level would you run? Keep pH in what range, 7.5-7.8? If there is an ozone generator, can you run lower levels of either bromine or chlorine since the ozone will do a majority of the work and the bromine or chlorine demand would be significantly lower - decreasing the chance of a major swing in bacteria levels or need for higher ppm levels?

[waterbear]

If you were running bromine - what level would you run? Keep pH in what range, 7.5-7.8? If there is an ozone generator, can you run lower levels of either bromine or chlorine since the ozone will do a majority of the work and the bromine or chlorine demand would be significantly lower - decreasing the chance of a major swing in bacteria levels or need for higher ppm levels?

Bromine is less pH dependant and will work fine in pH as high as 8.0 but I would still keep it in the 7.4-7.8 range for comfort of the bathers.
Ozone will work with bromine and against chlorine. Ozone will convert the bromide ions in the water from your bromine reserve (you need to add sodium bromide on each refill when using bromine, even with the tabs in a floater!) into hypobromous acid. it will keep your bromine levels more constant and you might need to shock less. Ozone will lower chlorine levels and chlorine destroys ozone so the two tend to work against each other. Even with ozone I would run my bromine about 6-8 ppm or my chlorine about 4-6 ppm so there is enough residual sanitizer in the water to keep it sanitized while being used...remember the ozone will only kill bacteria that come in contact with it and there is no residual in the water you are soaking in!