Also....be careful with how much of the spray formula that you spray on the little one in the dwc bucket.... If any of that should happen to seep down into the rez....well let's just say that you don't want ANY of that in your rez....

I've experienced powder mold....your RH has to be waaaaaaaaay higher than 50%.... Talking like constant wet and muggy conditions for PM.... You sure your RH is at 50%....

The ozone generating ionizer is not causing this.... Where does your exhaust go??? Recycled into the same area or does it go outside??? How much, how often does your grow space get fresh from outside air???

CGI::::::