hi jascure
First of all Dr Clark does not recommend or endorse any products, but I assume it's the Portazone you're talking about? That is the machine mostly associated with her work.
You need to define what you're going to use the ozone generator for before anyone here can give you educated advice.
With the right protocols and ozone machinery, ozone can be very effective against candida.
Let us know what type of generator you're looking for and what you want to do with it.
cheers,
paul