I think that foliar feeding at such a young age can do more harm than good. Hold off on foliar feeding for now. (Others opinions may differ)

Check the runoff PH next watering and give a good flush with PH adjusted water.

I use MG soil and generally run into a little N deficiency in the beginning however they seem to pull through it after a week (2 good waterings).

Occasional flushing is good to do anyway.
blink_inc Reviewed by blink_inc on . Not Sure How do these look, i'm not sure if i have Heat stress, or from what i was told when they arrived on Aug 22nd they this plant is normally light/pale green... 400w MH on 24/7 feeding only water - i think they are too young for fert Misting twice a day Temp - 75 - 84 Hum - 42 - 54% fan blowing light all the time. Arrival Day and now Rating: 5