Curling leaves!!!

hey guys this is my first ever grow and im using cfls in my closet. i have 2 300w equivelant 2700k cfls on 1 sativa with 2 seedlings next to it. the sativas top leaves are begining to curl down:cry:! is it because the light is too close or too far? right now its about 3 inches away. this just recently began happening and im a lil worried. shes about 2 months old and flowering a bit. any advice...
 
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