Well I'm concerned with FE1 - she's been stretching a bit and the new leafs (which I assume are the cola-containing stems) are a bit pale at the edge and oddly formed. A few other new leaves have a slight patterning to them.
Watering after drying out significantly, around every 3rd day w/...
I may be missing it in your reply, but my issue is that I'm running 260v (65v x4) and 130v (65x2) from cob series' - the linked display (which I actually purchased before realizing the issue) will only read 100v.