Water heating

[Lija]

I have ceramic heater right above the water, works for me you don't need to have warm water, as long as general tank temps are fine your froggy is gonna be ok.

[jarteta97]

There are aquatic heaters. Just search them up on amazon, neherpetoculture.com, joshsfrogs.com, etc.

Lija's way works too

[Mentat]

Estimate the actual volume of water and get an aquarium heater for it. Recommend Eheim; they are very accurate, can be calibrated against a thermometer, and glass is shatter proof pyrex. I've had them dangling in big (12 in. plus tail) cichlids that bang them all the time and never had one break .