I think my growth is relatively slow compared to other growers. Maybe that’s because I am using a purple light instead of white. And only 50 watt. Mistake note: to never use paper cups only plastic ones big ones and make holes in the bottom with the pin
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.