GMSgrowsanswered grow question 4 years ago If it's possible to check your runoff ec and ph, make sure everything is in check, then theres no guessing whether to use more or less ferts or to possibly flush if your way out of whack. We know you feed and water but only you know how much. I check runoff to see what my ec is after every water and every feed. Then I know from last watering day, if to feed cuz ec was lowering or just water again cuz the ec was still high. Cheers friend