Here are the pics of the yellowing I was talking about..
and a different plant
STATS from today from the res that hold these plants..
Temp 60 (colder than usual..assuming because the lights were out for 12 hours for the first time)
pH 6.5 .. a little high but I brought it down to 6.2 with some natural down..
The drain pumps (in the controller bucket) failed and the buckets were filled for several hours, and they all appeared to be over watered. Any fix for this? They seem to be perking up now..