Aeroponics grow - Blueberry Kush Fem'd

Week 2; plants have adjusted to the aeroponics system well and are begining to develope solid roots. Dropped the lights from 5ft down to 3ft after the shock/stress of transplanting to aero was over. One plant is looking a bit sad; had 1 bad sprayer; this was the same plant that had a helmet head for awhile during sprouting. Could just be weak genetics and combined with bad mister nozzle; may decide to cull and go with 2 plants. No real nute change this week; maintaining 300ppm; ph 6.0; no addtions needed. Run off tank is showing 280ppm; probably could raise nutes; but will wait until plants are a bit more established..