I didnt notice any hanging really when coming home, but hey its hard to see when she's this burned... doesnt look white though.. i just dont get it, the soil is clean and they've had 0 nutes what so ever.. Maybe its the humidity?
Your leaf damage appears to be either from over watering or nutrient burn. You want 20°-30° Celsius and 50%-70% humidity for vegetative growth and 30%-50% humidity for flowering.