You probably shouldn't put the heater on all night unless your house is seriously cold. It gets fairly cold at night in the wild. It is also a waste of energy and money if it's not required. I do however think 1 heat bulb might not be sufficient for someone in a cold place during winter using a screen/mesh cage. Unless you're room is always warm during the day. I don't spend much time in my room during the day and therefore don't adjust the heating so perhaps I'm not the best example.
I aim for 31C which is 82F and I've heard a few people quote this. I rarely achieve this despite having 3 thermometers and a dimming thermostat. At night, temperatures recently have been going down to 14-16C (57 - 61F)