They will freak out worse with less light than necessary. I have been vegging mine out doors then moving them into tent with a 1000w hps beaming down onto them from 24" away. Havent lost one yet from too much light. If its too close you will notice and can move it up some. Remember lumens= yield. The more light they have the more they produce. I just put some under two 24" T5 flourecents from seed to about 4wks old moved into flower and they are doing great. Hope this helps imp:
bronc76 Reviewed by bronc76 on . light question on newly transplanted clones Howdy pals. I have 6 AK-47 clones, newly rooted, that I just put into 1 gallon soil pots a few days ago. While rooting, the clones were under a fluorescent plant tube. After I put them in dirt, I turned on the 250 watt HPS (I know MH is better to veg, but this is what I have now) and within 2 hours, they looked floppy and stressed. My water and soil are ph 6.5, closet was at 85 degrees yesterday because of the outdoor heat and the light, but very well ventilated. I put them back to the Rating: 5