I think is a brilliant idea but does it REALLY make a difference. Or is it just a placebo to make you feel better.
It adds 200ppm into your room so if you do the math on it :
1500ppm is the best growing condition for cannabis plants. Regular air has 300ppm on average.
1500 - 300 = 1200ppm deficiency without bottles.
6 bottles of this mixture will be close to buying the system that would regularly cost some money to get set up and have 1200ppm added to your room.
1500ppm gives your plants a 250+% growth boost, so 1200ppm would be a 160% increase in plant growth so therefore 1200 / 200 = 6 bottles and 160% / 6 = 26% per bottle.
Each bottle you introduce into your room is a 26%+ increase in plant growth. 4 bottles doubles yield if my calculations are correct.
I change out my bottles every week to keep it to optimal emissions every day but they would last for 2 weeks decreasing slowly until completely out. Hope this helps..