These baby girls are outside all day in the sun then I put them in my 2x4 tent at sunset under a 4 ft single bulb fluorescent for an extra 6 hrs making 18 hrs total. Then I put them back outSide the next morning. These were just transplanted 3 days ago and look like there pretty healthy about to take off. Just watering with ro now but going to give them a light feed tomorrow morning. Using roots organic line.