Wow I had no clue It could burn em. I use a box fan to circulate, a small scrubber and the generator. Im not taking any chances in my condo. I would say get one if a scrubber doesn't cover it but scrubbers only work well if the room is sealed : /
i dont like the idea of putting the o zone generator in the grow..it will kill the smell on the plants completely . ive heard storys of it affecting the potency also.
i use it outside the grow area so no smell escapes..and use ONA jell inside the grow .it wont completely kill the taste and smell of your plants.and keeps the smell beat down well..
i have two carbon scrubbers but dont even use them.