Leaf Identification Please

Forget the cal/mag until flowering. She looks to me as though there is inadequate nutrition all round. Not many details to go on, but if she/they haven't had any nutrients for a week, she/they should be getting some soon. Try using quarter strength fertilizer every watering until they pick up, then go back to half strength every second watering. They should hopefully recover soon enough, but try not to push them too fast. At the moment they are a little bit unwell and you should try and nurse them back to health gently. Cal/mag are only "micro" nutrients and do not support growth on their own. Your plants need "macro" nutrients to thrive - nitrogen, potassium and phosphorous. Every "grow" type of fertilizer will have these in the correct amounts, also enough calcium and magnesium to sustain healthy growth during the vegetative stage. Once flowering is well underway, you can then think of giving your plants a feed with some extra cal/mag for insurance purposes. Again, any decent "flower" fertilizer will have adequate amounts of cal/mag to keep your plants happy and healthy. Hope this helps.... Organoman.