...yeah buddy! ...Co2 can kill you if the levels get too high.
...how much growing experience do you have bro? ...i've been at this going on 8 years and the only time i fucked with Co2 was when i was a noob trying to 'maximize my yields' and complicating my grow at every turn.
...it took a couple years but i eventually calmed down and decided to simplify my methods and now my grow is easy peasy lemon squeezy and i pull way more than i ever did when i was all complicating shit.
...for me simple has proven to be the winning way, more bud and less stress, that's my motto, lol.
peace, bozo