you should flush normally i belive, to get rid of built up salts to prevent nute lockout, I dont really see the confusion here. There probably arent any threads on it cause its relitivily easy. abrattoir dream is close its etiher 3-5 times the water i think. and just use the water u would normally use, Ph it, why wouldnt u, if u didnt ur soil is sure to go up pH. Chlorine free water, and if u want to know about plant problems i would suggest looking in the forum, also why are u posting in the grow lounge? There really isnt much to talkabout it to make a "dedicated" thread, its just something every one does and im sure they hate doing it.