white mold

As I came into grow room I looked and ther is white stuff on the top layer of the soil in most of my plants I am using mirical grow poting soil.... if I scap the top layer off it goes away it is not on the plants I am about 50-65% humidity I also have the co2 in the milk jug trick My plant look great so anyone that can tell what the hell is going on I dont want my little girls to DIE
thanx

it looks like i have the same shit on mine as i used MG soil too but I don't think its mold just texture of drying out MG soil

Does it crumble up if you go over it with your hands and fingers easy

yeah it does, i just watered them and noticed it really well...I wasn't scared for the past month cause it always seems to appear when top soil begins to get dry...but i dont know i'd like some more opinions on this matter as well

btw you have any pics? like to see your setup..how many weeks in are you?

I am at about 3.5 wks will take some pics and you?

you can check out my pics just click on my name - threads started

it starts smelling funky if it's grey mold. also, check your hygrometer to ensure it's accurate(put it outside, then check the weather channel). you may be sporting a way higher level of humidity than you though.