soda water???

my guess is that soda water cost's about .5$ per 12 oz bottle.
and maybe u get a co2 increase of maybe 300ppm for 10 minutes. so according to my calc's, u would need;

1 bottle every 10 minutes for 12 hrs (assuming just flowering time) = 72 bottles.
72 x .5 = 36$/day x 60 days of flowering = 2160$/plant.

u maybe will get from 300 ppm an extra 5% growth.

so for an extra 5% plant growth, u will be using 2160$.

now that doesnt seem to make too much sense eh?