Purple punch, dark devil, white widow

Both dark devils seem to be going well in flower, the purple punch auto and white widow auto are just starting to flower now. One of the dark devils seems to be carrying purple genetics while the other isn't. the green dark devil has a much stronger and more fruity aroma but that could be because it started flower a little sooner. Walked into the room on day 42 and the purple punch wasn't looking too good, leaves were wilting and turning yellow, I assume it was due to underwatering because I watered the plant generously and sprayed the leaves with a dilute solution of seaweed extract, humic acid and lactic acid bacteria and the next day the plant was looking like nothing had ever happened.