Nightlights are bulbs that produce heat with minimal light, compared to a basking bulb. Although many people believe that red lights were not visible to reptiles, this has been found not to be the case, so take care using these lights permanently overnight, as for some species it can seem brighter than we would expect, and can be confusing. A choice of Red, Infrared, and Black or Blue Nightlights, come in a range of fittings and wattages to suit your enclosure.
An alternative to these bulbs, that give off no light at all, so better for long term overnight use, would be a ceramic bulb instead, which you can find here. As with all heat sources, we recommend these bulbs are used on the correct dimming thermostat.