Need more info. You just put it outside or move it? When they need water the petioles sag, she could be over watered, not under. She looks highly fed. How often do you water? Does she have good drainage? Any bugs? What do you feed?
No he's not sure...not with all the information you gave us. First Glimpse sure needs water. Oh you just transplanted transplant shock. Oh you just moved it in under the big lights light burn.
1. Are you growing from seed or clones?
2. How old are your plants?
3. How tall are your plants?
4. What size containers are they planted in?
5. What is your soil mix?
6. How often do you water and what type of water do you use?
7. What is the pH of your water?
8. What kind of fertilizer do you use and what is its NPK ratio?
9. Do you foliar feed or spray your plants with anything?
10. What kind of lights do you use and how many watts combined? (HPS, MH, fluorescent, halogen, incandescent "plant lights")
11. How close are your lights to the plants?
12. What size is your grow space in square feet?
13. What is the temperature and humidity in your grow space?
14. What is the pH of the soil?
15. Have you noticed any insect activity in your grow space? 16. How much experience do you have growing?