If the 'photo negative generator' is that primitive DIY O3 generator... STAY FAR THE FUCK AWAY!!!!! That is what carbon filters are for... and without the risk of DEATH BY RAPID LUNG TISSUE OXIDATION. Yes. It has KILLED growers.
IF you want to run Ozone, there are better ways to do it, like an Ona or Ozium dispenser... you're less likely to die. Oh- plus the electrocution risk.