I have a question about reading the acurite. With the humidity part how doI get a correct reading? Does the humidity get measured through the probe or with the unit itself? I have had the same reading for the longest time no matter what i have done to change it. The probe is the only part that is in the tub. It is located about 3 inches above my substrate in the middle of the tank and the tub. I am also confused about the minimum and maximum readings. I figured out the readings for the temperature but not for the humidity. Can someone please help clear this up for me?