Perhaps if all the carboys were in their own small tent/ container and then exhausted into the flower tent periodically. You would capture all of it instead of loss to the surrounding environment. Experiment with it, tried just sugar water and yeast one grow, tubes from bottles to plants. IDK if it made a real difference, but was still some fire buds. What types do you have fermenting??
I like the tent idea. I’m still figuring out the best way to do this. I’m sure the fan I’m using captures all the CO2, but it’s so strong I think it may push the CO2 right out the top of the grow tent before it’s fully utilized, idk.
I have a few different kinds of mead brewing down there and I expect to add some more this weekend. There’s a fruit mead or "melomel" made with blueberry and oranges, a "pyment" made with honey and grape juice (my wife's favorite) and three different recipes of maple mead or "acerglyn". My intention is to make a tincture with some of the bud I'm growing and then add it to the mead before bottling. If all goes well, I'll have some cannabis maple mead to give out as presents next Christmas.