I am really stuck. I have a 4x4 grow room with a 400watt argosun combination bulb HPS and MH together. Roots are white with lots of little hairs. Ppm around 800 to 900 and tempt in reservoir is 65 degrees water cycle 30 min on and 30 min off then through nite water cycle off except one watering half way through nite. Almost immediately after cutting a leaf off the plant it begins to wilt even if I put them in the fridge.