justsmoking
Active Member
Ok I went all out and picked up a co2 system by hydro innovations the hydrogen pro with heat cap heat scrubber. The one problem was there monitor sucks so I picked up a better one that goes as high as 5000 ppm. Anyways. My question is can I go that high ? Do I have to stay below 1500 ppm's or is that the standard? Because my garage where I have grow is already around there without it on ? Can't I just add more than close all vent fans?