Looks like they might just need more light. you dont have very much light at all... you'll need more especially for flowering - otherwise you'll be stuck with a disappointing yield.

You may also need to up your feeding dosage slightly. you should try and keep track of the exact dosages so you can accurately adjust them as your plants get bigger.

It's very difficult to tell a strain from a picture, and impossible to if they have no buds since the buds usually have identifying characteristics. You CAN however tell if your plant is sativa, indica, or both by the thickness of the leaves. yours looks to be a bit on the indica side with some sativa characteristics.

hope this helps.:jointsmile:
Faddenator Reviewed by Faddenator on . Newbee to forun need help with yellowing What is your experience level? First timer Your Equipment: .1) Type and wattage of lights? (4) 2' fluorescent tubes wide spec 20w .2) Distance from tops? 4-5" .3) Reflector type? (cool tube set-up, bat wing, enclosed reflector, bare bulb...) bare bulb .4) Is there a consistent fresh air supply? yes .5) Do you have an exhaust fan and a circulation fan? yes .6) What are the bulb wattages, kelvin ratings, and schedule? 20w 16-8 slowly going to 12-12 Rating: 5