HELP WITH co2

Would co2 enricher be usefull in a grow room 1.2m x 1.2m x2m and also one a third the size or would the extraction fans bring down the ppm before it hit optimum levels...thanks guys

grab a bottle of desired size ( or a couple ) sum yeast and sugar. put a couple of cm of sugar in bottle fill with warm water about 1/2 to 3/4 shake up them add around the same amount of yeast shake up again. put a hole in bottle lid screw on and walla! cheap co2 the reaction causes bubbles of co2

hey tha tuk me a gd 5 minutes to right tha u kno. wheres the thnx for the help dude??