Ok I have to refer you to more hydro oriented folk than me. I grow in soil and keep up with other methods through other grows. Also I don't know the ec scale, I use ppm. @Pennywise might know. The light green looks like a growth spurt or it might be hungry. Either way I don't know why it wouldn't flower for you. Brighter minds on the way.Not the problem. Watering 3-4 times a day to runoff. What else could it be? Not enough nutes? I feed it at ec 1500 right now.