those are by far the nicest looking plants I have seen grown under Leds so far. Really dense growth with such uniform height, very impressed. I know biobizz is a top nute but the fact you are doing that in soil is even more impressive. I switched to flood and drain with vitalink long time ago and never looked back. The savings in time messing around with soil are worth it alone, forget the yield increase although yours look so good I doubt you could.