Truthfully for me at least I just leave it run all night. In the morning the rods look like hell but I have the sparkles in the beam just fine. I decant the sediment off the bottom and into the spray bottle. You want to start the spraying as soon as preflowers present themselves.
Edit: The guy who taught me all this (who is not longer on this site I just found out) was adamant that you change the whole plant and doing a partial reversal would not work well. I have never tried any partial reversals so I don't have any working knowledge of it...
Edit: The guy who taught me all this (who is not longer on this site I just found out) was adamant that you change the whole plant and doing a partial reversal would not work well. I have never tried any partial reversals so I don't have any working knowledge of it...