You use coffee for fertilizer during the veggie side and don’t use light roast anything way to acidic use a dark roast so it won’t floor your ph levels, I’ve had good experiences with it, don’t know exactly when you added it or if you noticed the level it got to. Just remember no light coffee it’s bad only use a teaspoon for each plant anything more will burn it and I would only do that every two-three weeks. If you got questions or concerns send me a message I’ll try to help dial things in with you.