fuzzy white mold on the surface of the soil?

WTF is this stuff i have a humidifier running, maybe too high of humidity? the plant is flowering and on its eighth week and the middle is browning, help?

careful with that stuff man. If it is mold then it's cos the air isn't circulating enough and the humidity's too high - but... it might be salt buildup from nutes. Get real close to it with a magnifying glass and you'll be able to tell. Mold's a fucker

i remixed up soil, put in an exhaust fan, and have got a meter to read temp and humidity. temp about 70-80 humidity 55-60. distilled water w/ epsom to help balance soil ph. should be ok?

it won't grow on your bud until you pick it off the plant and it stops growing, but since you KNOW you have lots of spores on the bud be very very careful in the drying/curing process!!