how many watering/feedings are you doing a week? I normally phase over three waterings. 1. 75%grow/25 %Flower 2. 50/50 3. 25/75. I start this a week into stretch. Now, you need to watch your plant too. If it is starting to get lighter green towards the bottom, you need more grow nutes...If it is ubber dark green. Lay off the grow nutes quicker...