I have world of seeds Afghan Kush and Paradise seeds White berry...

1)
2) Outdoors SouthEast U.S
3) Light watering every two/three days if theres no rain
4) Fox Farms Ocean Forest 70% Perlite 30%
5) Flowering @approx week 3/4

Pics are from after a light rain..As normal some leaves are yellowing... I am noticing a "whitening" on the leaves near the veins and wilting. a few fan leaves have withered and died already. Just wondering is this okay and if not how can I remedy it. i appreciate any help RIU, thanx in advance