I have extreme temp conditions in my house during the year...in the winter, parts of my house freeze and in the summer, the inside of an oven on broil is cooler!! During the summer months, I do constant misting with cool water and my African Giant Bullfrogs and Fire Belly Toads all have dishes filled to the brim with water. So far, I haven't lost any frogs or toads to over-heating. A misting system would be an excellent idea....I am sure someone on the Forum has experience with them and could help you.