Mold?

I am a few days before my final flush and i see some parts of buds that are white and some leaves small leaves at the top of the cola that are caked with with residue or something. this is my first grow and maybe this is normal, maybe its tric buildup but this seems like alot in the one leaf i point out in one of these pics. the buds you are looking at are og kush 18 and they are a little burned from using snow storm ultra but i quit using it a couple of weeks ago. i am just trying to determine if the coloring of the whiter spots on the buds is normal and if that leaf is normal. these plant are over 5 feet tall and are also inches from a 1000w hps. i tamed them the best i could and thought maybe the white was from some burning or something but its not that hot where the buds are. can anyone help me figure out if this is normal or what? i just took these pics during the dark cycle, thats when i see the white spots alot when i go check my plants at night with the green light.






Thanks.