Scott's recipe, looks alot like lucas formula. You should do well with it. seems like you got it going good. Airstones in the big rez would help. When your TDS neter gets here check your water to see how much it has now. You may need RO or distilled. Hard water is well over a 100 PPM. Lower your PH to 5.2 to 5.8, better for hydro. Humidity is good for veg stage but below 40% for flowering. Are you using only fluro's for light or do you have MH or HPS. Depends on how much you want to harvest. Vent to keep temp's down is good. Get a small faan to blow acrossed the plant lightlly, it help make them strong. You got it going on. Show some pic's when you can.