I use ozone cause i can't control the air pressure in my grow room to use a carbon scrubber. If i had the money and choice to convert my grow room to neg air pressure and completly seal it off i would drop the ozone gen and use a carbon scrubber in a heart beat.
It all depends on what you have as a grow room, cause i know some ppl have tried the carbon scrubber and it didn't work efficently. so they went to a neg ion gen or a ozone gen and it worked like a dream, but at a health risk.
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