My grow this year is from bagseed l, my medium is 30-40% vacumulite so that maybe why I can get away with fewer waterings as it holds water very well also giving the roots much needed oxygen. I'm feeding them a 2 part hydro nutes 17.5 ; 9.6 26.5. Once a week also feed them some cal-max. As far a yields go I'm not sure yet although still going to be veging for another 2 months before flowering, with a total of 5 months veg to maximize yeild. It's all a bit of trial and error really I'm no expert just love myself some green All the best with your grow and keep us updated P.s I'm going to try get my hands on some jack herer seeds for next yr, I was reading you can yeild up2 1200gms outdoors. I will be happy with 12 oz from my current 3 which will last me a yr of smoke Cheers