Quote Originally Posted by scooterjay
any thoughts on CO2 enriched atmospheres? my aunt (major greenthumb) grows african violets, wandering jew and tons of other houseplants and swears by talking to them. exhaled CO2 is the trick she says! i've got a small garden in the attic and am contemplating CO2 addition. would baking soda and vinegar liberate enough to be effective? i can always use dry ice or get a bottle of CO2 from national welders but that seems a bit of overkill. i am not going to use any hps or metal halide lights, strictly flourescents, mirrors and mylar so i figure i can enhance elswhere.
Fluorescents lights do not produce enough light to help the plant process the extra amount of CO². You need HID lights if you want to use CO².

Yes CO² is well worth the effort and expense. You can cut around 2 weeks of your overall grow time and increase your yield by as much as 20% or more.

Mirrors produce hot spots and can burn holes in your plants, FYI.