Thanks
@pop22 , got a bunch of the old formula MC and additives left, but will follow along to make sure I understand the new guidelines when the time comes to switch to the newer formula. Also liking your idea of Epsom Salts with the newer formula, interested to see what your results are. I am still using GH CaliMagic as my calmag additive, it mixes well since it is liquid, and does add very little N as I think the N-P-K is 1-0-0. But, I would like to get away from adding more N if possible, especially late in flower.