Well it must be a UVA that I have because it gets very hot (I wasn't sure because I threw out the package). But Ive had it over the end of my pixies tank where I have his large dish for about 3 hours now, and honestly he looks very happy. Its been getting colder in my apartment the past few days and he was more buried and looked less active (if thats possible for a frog lol). After having this over his tank for only a few hours he looks wide awake and really healthy. And I tend to mist and throw some water on the substrate daily if I see it drying out so I dont think that should be much of a problem, if it is I can always turn it off for a few hours.