I bought a heat pad for my cane toad, how many hours I can use it? I live in a tropical climate place, the Autumn has arrived this month, we get 26ºC during the day and 17ºC at night. I usually feed her at night, so may I provide heating in this time? And what about the winter, we get 7ºC until 13ºC... I use the heat pad all day or may I respect a time for hibernation?

(we use Celsius here so I don't know calculate in Farenheits)