Ok guys,Im coming thru with more stupid newbie questions so I apologize in advance. pH & ppm are all new to me with this being my 2nd indoor grow ever. I wanted to do things right this grow so I bought GH soil testing kit with pH up & down & GH floraduo A & B nutes. After doing some reading up on Google it says due to the complex nature of organic soil EC readings will be inaccurate so to go by watching plants for signs of nutrients deficiency. Do I need a ppm meter? Also because im using well water do I need to know ppm? And is this GH adjustment kit strictly for hydro or can I use the pH adjuster for soil & how? Every video I seem to look up has pH up & down for hydro & using natural things to adjust the pH for soil. Im so confused.