Is there any research data on the impact (or not) of instant lighting of plants vs. a gradual/phased-on lighting after plants have been in the dark for x hours. Is there a shock factor to the plants?
(Think of it as someone coming into your room in the morning and flipping all the lights at once when its time for you to wake up).
Natural lighting would be a gradual phase-on of illumination, not instant (and gradual phase-off too). Does it make any difference (besides the issue of inrush current on the lighting system)? If you are taking a phased-on approach, what are the phase-on/phased-off intervals?