Are you introducing nutes gradually then?
If your using led i cant see it being heat stressed and if your grow area is well ventilated.
As for watering u would back off and let the weight of the pots determine if they need water and by pushing your finger about 1 1/2 inches deep. If its light in weight and dry to the finger then water and leave till pot is light again.
Water frequently maybe every 2/3 days depending on your enviroment