So always has been a heated debate.   I have personally flushed before - with plain water and with chelated stuff such as florakleen. I have also not flushed and I no longer flush. I feed my plants up until harvest.   I stumbled upon this video, still busy watching it but a bit of research has been done on it and so far quite interesting.     So far it seems as if there isn't much of a difference, I find it interesting though that with the terpen