3 weeks into flowering and leaves falling off?

[boardercross91]

ok everyone, i have 2 female bag seed plants growing under cfl's right now. out of no where one of my girls started dropping her bottom leaves quickly, about 6 in 3-4 days. i decided to do a transplant today thinking maybe she's root bound? the leaves fell off all the way up to where the first node with bud is at, the pistils and new growth there looks great, but i must ask why the sudden death of the leaves? im hoping the fresh soil and space will help save her.

 

[Mutt]

1. How far along in flower are you?
2. Do you know your PH?
3. How far in flower did you give her veg nutes?
4. Do you have pics and/or know the strain?
5. what kind of ferts are you using?

 

[wakebud77]

How many lights are you using?