I`m in the USI have been using ZooMed heating pads. It is impacting her humidity, which is the only downside I see so far. It just means I need to spray her tank more, which I am okay with. The geckos and cornsnake don`t need much as far as humidity goes but it may get harder with the pacman frog. I will keep tinkering though, because as far as temps go it is working great.