Yeah I imagine they don't work in hydro (are any soil microbes known to work in hydro?) or they would even help that much (since roots grow so much better/easier in hydro compared to soil). The company that makes them also makes something called CalCarb that is supposed to give you the goody levels of Co2 without the work (by putting some kinda calcium Co2 foam on the stomata). I'm skeptical of it myself, although I just tried it with a regular hair sprayer and I may need something more professional to get it to spray/foam properly. You may want to check it out, because if it does work then its definitely the easiest way to add Co2 (although you may not be able to do it more than once every couple weeks as they recommend because it also supplies calcium).Im hydro so Azos and Mykos maybe of no use to myself but thx for the info anyway. Ive looked into root stimilants before i went 12/12 from seed but tbh developing a healthy root mass in hydro is rapid so never bothered. The bigger the roots the bigger the plants and as most of us grow in cabs that may not be good idea, ive been thinking tho of adding co2 to 12/12 from seed plants and see what happens.
going off of what Richard just said, is there truth to feminized seeds getting bigger in 12/12 from seed than regulars? I'd be happy if that were true!
PSo any of you guys have an idea of how much space any particular Nirvana strains take up in 12/12 from seed? I might try some when I switch this round to flower mode (if there is room after all this LST haha)