Is Co2 for outdoors good?

I have my plants growing out doors and I was wondering if co2 tanks would be a good investment, or if co2 is better for indoor use. The girls are in an area about 20x10 ft and surrounded by brick. Also, if I do use co2 should I use it throughout the entire veg and flowering process? Thank you

yo bro-welcome to RIU.i say it would be wastefull to use co2 tanks outdoors, because ther are no walls and a roof that would hold the co2 4 at least a little time in a room-co2 would just be gone straight ot air and carried away by th wind.But on the otherside, if you have the money and want to expirement then go for it, certannly it would not hurt the plants.
keep up the good work....

don't waist your money or time on that shit

reflective mylar will help or something like that

it would all just probally blow away unless u add like a layer of that plastic shit greenhouses use and seal up the area.....