Humidity...

It is very important to maintain the optimal humidity for each frog species. Doing so helps to maintain their health, prevents dehydration, assists in proper shedding, and helps them to regulate their electrolytes. This can be accomplished by manually misting or spraying the tank or by purchasing a fogger or automatic mister system. They can even be set on timers to make chores easier and to keep a more consistent reading. You will need a good humidity gauge for the tank.

Misting can be done with distilled water, spring water, or dechlorinated tap water. Distilled water is okay only for misting. Distilled water prevents water spots on the glass, which is nice, but cannot be used for soaking water or for moistening the substrate because it has no minerals or electrolytes in it and it actually draws electrolytes out of the frog if they soak in it.

Temperature...

Like humidity, all frogs have an optimal temperature range. Day time temps are generally a few degrees higher than night time temps. The subtle drop helps mimic their natural environment. Providing the proper heat will assist them in maintaining proper metabolism and with digestion. Too high of a temp can cause dehydration and electrolyte imbalances. Too low of a temp can slow their metabolism, decease their drive to eat, and make them lethargic. Too high and too low can weaken their immune systems and may lead to illness. It is best to place their temperature gauge at the level of their "trees" or most common living space.

Providing cooling...

Cooling a tank can be done by cooling the temp within the surrounds of your home, such as using air conditioning, but the tank should not be placed within a close direct path of the ac blower. Fans in the general vicinity of the tank are okay. Small computer fans can also be used on the screen top to one end to help cool the tank. Be sure to monitor the tanks humidity closely, as it will drop with adding a fan.

Heating a tank...

There are different options for heating a tank. You can use a UTH (Under Tank Heater) or terrarium heat pad place on an external side of the tank, a ceramic heat emitter bulb, a red heat bulb of 50 watts or less, or a black or blue night viewing heat bulb of 50 watts or less, or a combination of these options. Bulbs should be used in a dome lamp with a dimmer so you can adjust the level of heat or a canopy fixture. The heat bulbs will also lessen the humidity. You can also adjust the heat level by adjusting your room temp. I actually set an electric heater with a thermostat in my frogs' room. Of course, it depends on if you like a toasty room .