Umbra, you & Keef are giving me a headache with all the x's & f's, etc, etc. No way I can even follow all that! Will it be good medicine? If so, I'll grow it! Plan to mix my first beneficial tea tomorrow. Will be trying it on one box first, then go from there; that's the good thing about having multiple units instead of just one. Plus, thinking of putting a small A/C in the growroom to cool it a little more & not have to freeze in the rest of the house. I think the plants would like it & I know I would when I'm back there gardening!