So, I've noticed very recently, within the last week or so that my little frog's tank has been having the HARDEST time keeping it's humidity up. Is my tank too hot? My apartment has been around 80 degrees lately and her tank is roughly 90 degrees. I'll check her tank about every hour when I'm home and every hour it's down to 20-30% humidty. I started pouring water into the bottom and going through about two full spray bottles worth of water only to get it up to 70%. I feel bad for her and I want to know what I'm doing wrong. I do have an undertank heater since my apartment was getting to about 65 degrees during the night. I have about 1" of coconut fiber at the bottom of her tank. My bearded dragon's cage has more humidity in it most of the time with no water source than her's and her ground is almost always half-way wet.

What am I doing wrong?