ok background 1st, im currently doing my 1st hydro (flood and drain( grow. im using dutch pro bloom, exolode and multi total. using liquid silicon as well as ph up and down as and wen i need it. the dutch pro chart reccomends an ec of 2.3. a few weeks ago my ec was 2.4 and has been slowly rising since. ive been following the feed schedule and just today i pretty much emptied my resovoir then filled it up agian but after all the nutrients it was at 2.9. my plants look healthy and everything so i was never really worried before but 2.9 does seem too much and im probably only 14 days or so from harvest. so 2 questions, 1. should i lower the concentration of nutrients and get the ec down to the reccomended amount? 2. do i do anything for harvest flush etc? all input greatly appreciated like i said this is my first go at hydro just trying to not stumble at the final hurdle.