Please help me out. I am getting near the end of my first grow (wow what a learning experience), and have come to an issue I cannot solve from reading 1,000 posts. I have 5 Green Crack autos, under a Kind LED K3 L600 (actual watts 320 / supposedly replaces 600W). They are all in a Superponics 16 Bubbleponics system. I have BATTLED heat and humidity due to the surrounding climate. The best span I could get was approx 88-89F during the hottest/lights on times and maybe 72-75F at night. Reservoir temps stay between 71-75F (because I constantly put frozen water bottles in). After a nute change, the pH raises while PPM drops the first day or so, then pH starts traveling down and PPM fluctuate slightly. Been using the Technaflora BC Nutrients that came with the whole start package. So far everything seems to be falling in line (although I thought these would be done sooner, being autos, but it's possible I've stunted them along the way). They look pretty good, besides some leaf issues that came about while I was sick for a few days (could be deficiencies). ANYWAYS...... one of these plants looks HELLA more mature than the others. I've read about harvesting one plant at a time, or parts of a plant..... but how can I flush/harvest one plant only when they all share the same reservoir???? I mean, if I flush the res to harvest the one... wouldn't it starve the rest?? Also, how the hell do you steady a damn microscope long enough to see any-damn-thing under it hahaha. Pointers there would be greatly appreciated. Please help.