I've changed my mind about getting a second ceramic heat emitter bulb because one seems to be working just fine. It keeps it at a constant 80 ambient temp so that's good, especially for it being winter in the Northeast lol.

Ceramic emitter bulbs run a bit expensive (about $35) but I've had this same one for quite some time. Had 2 baby tortoises about 2 years ago who had this bulb on 24/7. Had them for about 6 months with the bulb running 24/7.

Now, 2 years later, dug out that dome top, same bulbs still in it and it still pumps heat like the day I got it. Definitely worth the money.