White spots and fungus gnats

Hi, i have had gnats in my grow area and I am trying to control them using fly tape. It seems to be working somewhat. However, on one of my plants i'm starting to see various white spots, almost like powdery mildew. It wipes off when i wipe it. Do gnats lead to mildew on the foliage? They are late into budding and i am seeing very small amounts of these growths on the foliage. When i see a growth of it, i chop it off. I am not sure what to do since it's so late into flowering. There has never been a concentrated area. I will get a picture soon.

you should buy fungicide 3 in 1. kills bugs, keeps away mites, and mold

just mix in water n water the plant. also spray on the leaves. it contains neem oil. 13 bucks at home depot

is it okay to spray so late? I'm about almost a week or two to harvest...

How high is your humidity???

u could try a h202 spay mix
fungus gnat larvae feed off roots

Unfortunately it varies. When i'm around, I try to keep it as low as I can, but there are a lot of times where I will not be able to control the humidity, the smell is strong and i have to keep the door closed, or i am not around to open the door. Sometimes i get condensation.

Hydrogen Peroxide... Is it okay to spray on the soil? Buds? If it is, I'm doing it.

High humidity is probably causing those white spots you see,and it is a good idea to keep your humidity low (16%-17%) at the end of flowering,doing so will cause increase in thc production.Don't you have a ventilation system set up????You should consider investing on inline fans and a carbon filter for smell.

yeah hydrogen peroxide
u want to dilute it of course...say 30 ml per gallon
and for foliar spray 250 ml per gallon
also white spots on leaves could be a sign of spider mites

Don't spray if you have humidity issues you might make it worst,if the powdery mildew isn't that bad just wipe it off and try to get your area dry.You can get mold on your buds if you spray and have high humidity making your situation worst than it is.Your main problem is the white spots you see right???not the gnats???

and like jcws says
u need some ventilation

i only suggested the spray for the infestation

just be careful before diagnosing your precious plants with a fungi or whatnot. i recently had a problem of my leaves turning yellow slowly . i thought it was everythin from nutrition probs to fungi to insects ....... wait for it here it comes....... the plants were drowning in a fully plumbed hydro set up , they were drowning i couldnt believe my eyes when i saw the amount of waterthat was built up so remember check you systems every couple of week.
STAY HIGH

Well, i have only seen it on one of my plants, but this particular plant has a slight fuzz growing on the surface of the soil... That's why i thought gnats. I will dry out the soil. I have a fan inside the area which i blow air onto the plants, but i don't really have an intake. I do try to open it everyday and blow fresh air onto it through a window, but sometimes i can't get to them before they go to sleep cause i'm out of the house or something. I also have very close neighbors... Is it okay to spray the soil with h2o2?