I have ozone running in my internally mounted 9005. The ozonizer I have only has 3 settings low, medium, and high. I assume that low produces roughly 8mg as it is a 25mg unit. The manufacturer claims that it does not require an air drier. I am running it on a timer for 15min intervals with a 45min rest, for a total of 6 hours per day. Since I am unable to dial it down to 1mg/hr I am probably dosing double your recommendation, but for only 15min at a time. That is if the humidity really isn't a factor and that the low setting is 33% output, could be less or more, who knows? I still get skimmate, just lighter, and less. The yellow tint is being reduced slowly so I am guessing it is not too much O3 since I have seen yellow tint cleared overnight with higher doses of O3. I can't check the ORP as of yet, but will soon. I have the flow control door wide open. I do get a few micro bubbles in the tank with the door fully open but not enough to bother me. With it closed there are a lot less. After that long-winded post I will finally ask my question. Should I run the skimmer at 70% or 5% to make sure none of the O3 gets into the tank or does the O3 dissipate fast enough at such low levels that I need not worry?