Not sure on your strain. Its hard to tell anyways I think before flowering at this point in time unless the plant is really distinctive. Your plant does look good, lots of vigerous veg. growth, plenty of nodes and no discoloration however;

I think you are overwatering. Your plant in its entirety is drooping which is a tell tale sign of over watering. Back off the watering quite a bit and gradually increase your water durations. Your water level for hydro should go as high as the roots are. It is up to your own discression we cant see your tray size or anything. Hope this helps