I ordered my first bag. And have to say it was worth the few days it took to arrive. Now i I found hydostoresin a reasonable distance that carry it. They even offered to order the type I wanted if not stocked. Should have done it long ago!
I agreewith the Nitrogen tox., also K causes texture of leaves to feel paper like, also thick appearing. The plant behind shows yellowing in lower growth,
keep fluhing and foliar feed at half strength