I use dry ice. i use a bowl with a lid and cut wholes in the top to release into the tent slowly. place the bowl on the ground between your girls. try finding a Emergency ice in your area. i get mine there for 75 cents a lbs. hope that helps
jbrand Reviewed by jbrand on . Clean way to add extra Co2? I tried baking soda and vinegar in the past and it made a merry mess. :( Still, when growing with LED's you need : more heat more Co2 less water less nutes My current cabinet is much smaller- 2' X 1' X 4' 8". and has an active air intake (camouflaged by a kitty litter box) so...what's a clean, safe way to increase Co2 levels? Does it really matter for such a small grow (2 plants in a small cabinet)? Rating: 5