If you're in the states, you can buy 4 lbs of calcium carbonate powder from Kelp4Less for $18, but like I said, it is a strong base, even after converting it to calcium acetate by mixing it with vinegar for a day and just extracting the liquid.Yep, they’re all designed for foliar use from what I can tell. I just called the folks at biomin and described the use case, what I’ve been told (not always reality) is that the 1-0-0 pictured below will satisfy what I’m after. Problem is I can only find it in 5 gal buckets
@Emilya i have no doubts your recipe works and works well, my issue is a wife who will go nuts if I introduce yet another (what she considers) bad smell into our house. LOL that’s the reason for my search elsewhere, just as an fyi.
FWIW, if you look over that flyer/ad you posted, nowhere does it mention hydroponic use, just foliar and soil amending. I mean it will mostly dissolve in water which makes you think it's safe to use, till 10~ days later you start getting Ca def in your leaves and you're like WTF?