On to my 3rd grow with my new home built undercurrent system. Just transplanted from dirt to net cup with collar and no substrate. Next is an 8x2 scrog for each row of the grow. Running Masterblend, Calcium Nitrate and Epsom Salt @ 10/10/5. Temp 90 Humidity 80 PPM 360 PH 6.0 Hope all goes well!