Haesuse wrote:stump killer gets a bad rap....
THIS is what i mean by "stump killer". Pure KNO3. AKA Salt Peter. AKA Stump Killer. AKA Fertilizer.
And this is an article by Michigan State University, talking about how it is readily used in the agricultural industry as a fertilizer for both K and N.
and here is a website selling it for use in a planted aquarium
and here i am, 10 years later, with aquariums so lush that i have to prune FAR more often than i'd like, filled with fish that I wish had died 8 years ago, just so i could get new ones.
all im saying is that pure KNO3 aint that bad, in the grand scheme of things.
and we can argue till the cows come home about using chems in a garden, but the quite obvious truth of the matter is that, 100% pure, absolute chemically pristine, potassium nitrate, is one of the MAIN ingredients in homemade compost. potassium nitrate IS stump killer (unless you buy the much less safe, much more nasty versions).
if you handed a chemist a single molecule of KNO3 that came from a lab, and the same chemist another molecule of KNO3 that came from your compost pile in your backyard, he could spend the rest of eternity trying to figure out which was which.... it's impossible.