I have three at the same pace as your. JillyBean, PowerPlant, and BlueDream.... I have 50% hum. using Xnutrients. I keep my PPM the same just hanging over 2000. MY PH IS @6.0 THEY PUSHING UP FAST AND GETTING DENCER. http://youtu.be/V-3O9c33E10
I have 400 wts hps and 8 gal resv. witha 16...