I already have a bulb heating the tank it's just I wanted to add the heat mat as a bit of extra warmth even though it's not necessary. I'm not the kind of person who sets up the enclosure after buying the animal just to find that something isn't right.

I think I'll get a heat mat which has a temperature control thingy on it just incase. I just moved the frog into the room I keep all my invertebrates in as well so it may not even need that extra heat because that room is already pretty warm.