I am in my 6th week of Vegetation and this is my first grow, everything was going good up until this point. I have been noticing small white spots on the soil in a couple of the pots, today I noticed the white spots are in a few more pots and I have about 10/23 of my pots that have these white spots that appear to be mold. The dirt hasn't had any problems until this week. I am using outdoor soil (Missouri has some of the best soil you can find), I didn't bake the soil, it came straight from outside to planting pots. I believe the white spots are mold, but I'm not positive, if they are how can I fix this problem and is there any damage being done to the plants?