the 2 older ones are of the same age i.e. 35 days old the 3rd one is 26 days old what do you think I cut some leaves that give shade or are some tops still forming?
Sup mate! Your humidity is too low, it should be about 60-70% at vegetation, u should raise the humidity.. And look at the temperature drop, try to reduce it to 3 degrees (it is cold at night). I also see that the lamps are very high, drop it. Fix this moments and u'll see a result man)
happy growing!)