Quote Originally Posted by the image reaper
there is an old saying, that "adding CO2, is beneficial, ONLY if everything else is 'just right' " ... dunno if that's true, but I add 'hillbilly' CO2, and can't honestly say that I've seen a bit of difference ... but, I just do the sugar/yeast thing, costs only pennies, and does SEEM to add CO2 in the cabinet, no way of measuring the output ... :smokin:
Studies have shown optimal growth and yields at 90-95°F, 1,500 ppm CO2, 45-50% relative humidity, 7,500-10,000 lumens/square foot of light, and vigorous air movement both above and below the canopy.
So, basically if i do that i should be good i found a formula to calculate how many lbs of co2 is needed to bring a certain area to 1500ppm's sooo... now that i no that i need to figure out the average consumption of co2 per plant... or by a really expensive co2 monitor

here's the formula if anyone is interested

To calculate the amount of Carbon Dioxide needed to enrich a room to 1500 ppm, first calculate the volume of the growing space. For instance, an 8x8 foot room with an 8 foot ceiling would contain 512 cubic feet of space. Determine the CO2 needed to enrich to 1500 ppm by multiplying the volume of space by .0015.

512 x .0015 = 0.768

Thus, 0.768 cubic feet (or rounded up to 0.8 cu ft ) of carbon dioxide will be needed to enrich this room at 1500 ppm. 1 lb of CO2 is equal to about 8.5 cubic feet at normal temperature and atmospheric pressure.
by the way i found that information here https://www.hempcultivation.com/420/...ent-guide.html