I just did a soil slurry test and I have almost no nitrogen in my medium. You can see in the picture I have some potassium still.
So question. What do I do? I just recently flipped to a 12-12 schedule. It's my understanding that in flower, the plant uses great deals of P&K but no so much nitrogen. I just flipped, but do you think my plants will be fine? Or do I need to amend my soil anyway?