leaf problem

is there some one that can give me some info on whats is wrong with my plants this is my first grow in soil ph is 7 and i put perlite on top of soil cuz i saw a few gnats little bastards any help would be great

Don't see much of a problem except maybe a tad of heat stress in the first pic

sorry put wrong pics up can u take look again please max

you need to adjust your pH to 6.5 in soil
have you given it any ferts? you may have given too much