Michael Cox wrote:Most of the alkali compounds are water soluble. I tend to soak the biochar I make anyway, before using it, and expect that most of the alkali has washed out.
But like many things, it is possible for over thinking to get in the way. W
Will homemade biochar help your garden? Probably, yes.
Can biochar made with complicated retorts, temperature control and other things make better biochar? Also, probably yes.
Does the difference matter? Probably not.
There is a valuable saying that I like in this context "don't let perfect be the enemy of good"