For several months, I've been trying to educate myself on growing marijuana indoors. I've created two grow boxes, one pc box, and one mini fridge box. They're both up and running, and now I'm ready to start my grow. Ive got some white rhino, northern lights, and white berry to grow. I'm confident on everything EXCEPT soil and nutrients. I don't understand anything. I heard master's pride pro is good soil, but I know the soil you get has to corrospond with the nutrients. I would love premixed soil, but I don't want to skimp on quality for simplicity. Any advice is greatly appreciated!