Please help...lots of pix..3 weeks flower

[hactor]

its gotten worse

the most affected plants are not drinking much water(the container is much heavier than my bigger plants)

it starts off with the white spots/flakes and then starts drying out and dying at the edges/tips

I cant figure it out and its driving me crazy

 

[hactor]

I'd also like to add that its mostly on the bottom leaves

the tops are looking super good except for some of the tall ones that have minor heat stress

 

[hotpants69]

i think that may be some sort of a pest problem. i could be wrong though. i can't imagine white spots being from any sort of nute/water/ph problem. i know in a sea of green they generally prune the bottom 1/3rd so maybe it naturally dies off? lol idk still on my first grow

 

[sqhschief]

White stuff is a type of mold. Other is some nute problem.

 

[hactor]

White stuff is a type of mold. Other is some nute problem.

how do I get rid of the mold??

my friend said nutelockout so I flushed them with clearex

 

[madnugs]

if its powder mildey try to use serenade, it gets rid of that. and the bottom leaves will slowly die off, because they are of no more importance(all the nitrogen has been used)to the plant.