Medical attempt

Hi,As I did formerly,I keep things simple as possible.What does it means? 1. I make my soil mix myself. Ingredients regular potting soil, perlit ( from factory, it is filter perlit ),coffee grounds,eggshell powder,cat litter ( bentonit size 2-3 mm ), coco coir. 2.No special pots, regulated environment ( same as room temperature and humidity.) 3.No tent,no growing room. 4.No EC meter and PH meter.At least I haven't needed it so far. 5. I use regular nutrient solution what can be found every store.If I need more some of nutrienrs, Ca/MGg Glauber salt, N and P coming from CIP chemicals. Nitric acid HNO3, phosphoric acid H3PO4.