I'd go shorter inside. Even a large Sulcatas is only 16 inches tall at rest. Heat rises, so to get the air at the bottom 16 inches warm enough, the air in those top 20 inches, where the tortoise isn't sitting, will have to be heated even more. My boxes are about 20 Inches tall inside. Plenty of room for a large 100+ pound male to stand and walk in, but not so tall that I'm heating a bunch of air way above the tortoise.Tom and Rocco's mom (or dad?),
Thanks for this thread! So Shelly is a 40 lb sulcata female, who will live outside in Las Vegas NV. I have a 4'x6' x 3' tall in back 2' tall in front, timber with 1 1/2" foam lined walls & lined pitched tin roof "hide", in mind to build. How does this sound? 80 watt roof mounted RHP... I'm thinking. Thanks - Vince View attachment 350436
A RHP by itself is not enough heat. You need the combo of a RHP and a Kane mat underneath. This is enough heat for a box with internal dimensions of 39x39x21 inches on winter nights that drop below freezing. Your box will be significantly larger inside. It gets pretty cold in Vegas on those winter nights, so you might need even more heat. Your thermometer will tell you. I'd run a mini radiant oil heater in something that size. Or you could run all three. Use the Kane mat and RHP on a thermostat set to the mid 80s in winter, and use a second thermostat set to the low 80s, for the radiant oil heater. Redundant safety. Be sure all cords and thermostats can handle the wattage.
Single Tortoise Night Box
I like my larger tortoises to live outside full time. My climate permits this year round with a little help. For people who live where it snows all winter, this type of box is still good for warmer weather, getting them out earlier in Spring, and keeping them out a bit later into fall. You'll...

Double Door Night Box
As the years have gone by and I build more of these boxes, I learn more and more each time. This one is the latest and I incorporated everything I've learned over the years. I also tried to take lots of pics so I can explain in more detail some of what is going on. It will take multiple posts to...
