can anyone help. i have just started my flower cycle of 12/12 and am having problems getting my humidty above 37 percent. my temp is averaging 70 71 degrees. will my plants be harmed by this low humidty. i have an osolating fan and a oil heater with thermostat plus my extractor all timed to come on when . heater on 2 when light is off with fan and extractor on at timed intervals too.