More questions sorry lol. is the ak clones in rockwool in the clay pabbles or are they just straight into the pebbles?Was the leaves yellowing before you started feeding.superthrive is a vitamin supplament /stress releaver.heres a pic of my ak they are only 2 weeks into flower these i grew to select a mother and just threw the rest in 12/12.ohh i would lower the ph a little maybe to 5.5 in the clay pebbles and are you self watering them or do you have hydroponics set up with the clay pebbles.