need help with chikita, flo, and Durban poison

This is the second week from buying them as a clone.

Currently using the go grow box with pro mix soilless. 210 watts cfl.

The problem looks like the leaves are getting lighter in color and starting to show brown spots on all three. The chikita looks to be havin some major droopage as well. Pics below.

I am thinking it is a manganese problem as far as the brown spots. Maybe nitrogen deficient? And I don't think the heat is causing the drooping because its fairly cool.

Any help is appreciated.

CHIKITA

http://i.imgur.com/bgiefFM.jpg

DURBAN POISON

http://i.imgur.com/fnweTWr.jpg

FLO

http://i.imgur.com/JxFU6LL.jpg

Chikita : Over watered ; Stop watering !
Durban Poison : Heat Stress ; Reduce the heat or get it far from the light !
Flo : Burns ; Don't add nutrients, don't remove the burnt bottom leaves, let them absorb the additional feed !

Get me informed !