thanks for the replys. i am trying to be as efficent as possible with the lighting. also i have heard that there is no ill effect on the plants (all plants) in the absence of intense light for less than 15 mins? if that is trure then it would seem benifical for the plans to recieve more even lighting with a mover? btw i have a 6x10 area with 2-1000 w next gen ballast lights,6" air cooled reflectors vented to outside on movers, ac vents so temp is controlled at all times at around 75, ebb/flow hydro system. thanks for the experienced, measured responses.