I'm not saying that what you've done is bad... it's a really smart idea to get alot of co2 but there's alot of noobs/greeners that don't know shit about shit and could really die over this.
This is not something I would recommend to anyone other than a qualified HVAC/PLUMBER. Or just no idiots. I keep thinking of Co2 monitors that you can buy for your house, would be a good idea in this situation to keep your asses safe.
Like the foliar spray idea. I have a few plants starting flower right now and would like to try this idea. Panhead how often do you do this during the flowering cycle?