Leaves folding, not uniform though? Anything to worry about?

Hello Since your growing a variety of strains it wouldn't be uncommon for them to have different reactions to the same treatments(heat/humidity/ feeding) etc. The SLH i would say needs the biogrow taken out and replaced with a bioblooom. Those really dark green leaves are a pretty good indicator that its getting more nitrogen than it wants at this flowering stage. For the folding and cupping...often times it can be heat or light causing the upward cupping. Nitrogen can also cause that swooping curl under also. Otherwise sometimes the watering practices can cause that all to be happening, mostly overwatering will. Since they're all going into flowering I'd definitely say to lower the biogrow and start the biobloom except for the ones with the amber trichromes, they're probably ready for a flush.👍 *also are you doing any ph testing periodically?