Need low tech solutions to an overwhelming amount of bullshit? I can help! I don't use any meters, never check PH. I can help you achieve sucsess with the same tools available 30 years ago. I only use soiless medium, Mylar, 1000wt lights without hoods, exhaust fan, timers, good water, and cheap nutrients. The only thing I get at the grow shops is lights, bulbs, mylar. The rest is all bought on the cheap. Once you get a growroom set up right you will easily get back 5 to 1 on your investment. This includes your rent, electricity, and grow supplies. Just like back in the gold rush days. The miners seldomly got rich, but the guys selling the picks, shovels, lumber, food etc. made the fortunes. Take some of that profit back. Low tech, low cost.