on a slightly better look at the images, the first plant has what may be burns at tips of leaves.
the second plant has minor nutrient burns. no big ones, but if it gets any worse there is a prolem.

what fertilizers are you using? did you start the flowering ferts early?
klondike_bar Reviewed by klondike_bar on . Flowering problems ! ! Hy everyone ! Can someone tell me what is wrong with first ( picture 1 ) and second (picture 2 ) pair of leafs without knowing PH ? ? From experience ! First and second pair of leafs are from different plant but they are in the same pot . Temperature and humidity are ok ! They are 1 day on 12/12 and been fertilized one time in veg . Rating: 5