I have one afgan kush plant under a 2ft 4 bulb floro. I had my plant originally on 24/7, but I switched it to 18/6 when I had to move it out of AC cooled environment (The light was off during the highest heat of the day). It is back in the AC cooled environment, but i keep it at 18/6 still. I am doing this so i have a period that i can spray my plant, with the light off. Would it be better for me to switch back to 24/7, and can i spray my plants with a 2ft 4 bulb floro about 10 inches away on.