Ok...we are having a swim spa and a hot tub installed in a not-yet-constructed sunroom which will be attached to the house. Of course, the windows will be operable for ventilation and we are planning on having an in-wall dehumidifier installed. The sunroom will be heated and air conditioned.
I have been struggling with deciding upon a water treatment method. Both units are self-contained and will come equipped with their own ozonators. I am aware of the risks with using ozonators especially in an indoor application such as ours. Furthermore, my young son has some history of asthmatic issues. So, we are planning on not using the ozonators except for instances in which we want to run in them temporarily to address any issues ( a cold in the house, a pool/spa party yielding increased usage, etc). In these events, we will run the ozonators with the windows open.
But, for daily on-going treatment, without the ozonator, I am struggling with finding a manageable yet effective method while avoiding "that smell" with our indoor application.
I have read about enzyme methods, but I am not completely sold on their sanitation efficiency. I know bromine is effective, but I am a little concerned about the odor. The same goes for chlorine. I am also aware of the mineral methods (Nature2), but I understand that they aren't really suitable for larger pool of water at higher temps, such as the swim spa. I have heard of ionizers but don't know much about them.
So, with the two units (swim spa and hot tub), our indoor application, and the potential sensitivity of my son to ozone...I really don't know which way to go.
Any advice would be really appreciated.