I had this issue a few weeks ago (everyone’s furnace breaking this year?). With ceramic heaters I only go for a slightly lower wattage than my daytime bulb to aid in his digestion, but my beardie has been sick off and on so I tend to go overboard. Ceramic bulbs aren’t as finicky as UVA bulbs (they don’t blow as easily) and last a lot longer. So, brand isn’t super important, in my experience. I use a 100W in my 100 gallon tank. I stick to brands I can get at petsmart, but those tend to be more expensive. So if this is a short term solution, a generic brand will probably also work.
In addition, I added a second heating mat for the cold side of his tank. It’s self regulating so it won’t get above 80 degrees on the cold side, but it’s $30. I put a space heater in his room to keep the room temp up. I also keep a towel in his cage under the heat lamp when he takes a
bath and when his lights are about to shut off. This gives me a warm towel to dry him with after a
bath, or a warm towel to wrap him in when it’s time for bed.
In a pinch, glove warmers can be very effective for keeping them warm. I use them if our power goes out or I need to transport my beardie somewhere. Make sure there’s a towel between your beardie and the glove warmers, but they don’t tend to get concerningly hot.
I also closely watched his bowel movements and appetite on top of watching the temperature itself because those can be indicative that his temperature is not adequate.
The ceramic bulb I use:
Amazon.com
Heating mat:
https://www.amazon.com/Aiicioo-Unde...2lkZ2V0TmFtZT1zcF9waG9uZV9zZWFyY2hfbXRm&psc=1
Hand/glove warmers:
https://www.amazon.com/HotHands-10-...699209064&sprefix=gloce+warmer,aps,102&sr=8-3
