DWC temp question?

DWC TEMP QUESTION?

ROOM:
TEMP: 81F day/75F night
RH: 41% day/50% night
Is this okay growing conditions?

BUCKET TEMP: consistent 77%
with 2 air stones one at the bottom one closer to the net pot
What signs to look for from plant when bucket temp is too high?

This is how she looks!

strive for lower water temps. < 70F

Somehow I think you know this tid bit already.