Is there a problem with my clone?

Alright I have had this sitting in 24hr lighting for a few days. Do I need to put it into 16/8 or something else? My mother looks great and so does all my other plants.

bump....

This is my first grow guys and I'm not sure if this is normal for a clone or not. I'm guessing not, but I would like some idea of what this yellowing is.