#1 is going weird, the resin production on this one is so low. I've already seen that on outdoor autoflowers and it gave bad quality cannabis..
Otherwise the resin production on #4 is high, but the buds are very thin.
#2 & #3 look really good.
18/05 - Day 50 : 3L/plant (0,6g/L Flo, 0,3g/L Booster)
21/05 - Day 53 : 4L/plant (Clean water)
24/05 - Day 56 : 4L/plant (0,3g/L Flo, 0,2g/L Booster)