This Zoo Med brand ceramic heat emitter is a good way to provide heat to your tortoises day and night. While sources of light are turned off, this produces heat but no light and will not interrupt the sleep patterns of reptiles. These can be used on a dimmer or a timer. They can also be combined with a thermostat to maintain the perfect temperature in a given area. We commonly leave them on 24/7 to heat the enclosure day and night, and just turn off the strip and spot lights at night. These also are great for use in outdoor hideboxes on cooler nights and during winter. 

These lamps have an extremely long lifespan, as much as 5 years or more. We have some that have been in use for 5 years almost constantly and are still working well. 

Great for use with our 8.5" ceramic dome light fixture and our Light Stand!