I'm dry testing "kids" terrarium for my future boa imperator. I used heat mat on the side to convert conductive heat transfer into more of a radiant one and slow down heating and cooling. Seems to work good, I'll check tomorrow when my remote thermometer finally arrive.

My problem is that on the cold end I'm consistently getting 22°C ≈ 71 F with heat pad on and basking light off.

I haven't add drain layer and substrate yet, because if I should mount an additional heating mat under the terrarium, I'd rather do it now. I also considered a cover with very weak heating bulbs (black of course) etc

But the point is – maybe it is warm enough? Especially for a nighttime temperature?

Photo of my progress so far

  • How much do you reach at the warm end? You know, that the snake will choose from the places that one, that heats it up or another that cools it down like it would prefer the actual body temperature... Feb 23 at 5:25
  • 1
    @Allerleirauh about 35°C. More precise measurements today, still waiting for good thermometer :)
    – Mołot
    Feb 23 at 8:29

1 Answer 1


I am no snake expert, but from what I have found, your night temperature should be a little warmer. If we look at the graphs on this site about the temperatures the Boa Imperator lives in naturally we can see that the lowest annual temperature at night on average is at about 77 F ≈ 25 °C.

Since you might not want to go by the lowest average, I would recommend going for something a little safer, so you can be sure your snake is feeling comfortable and if the temperature drops a little you are still in a safe margin.

This page about the living conditions for Boas recommends 80-85 F ≈ 26.5 - 29.4 °C for the cooler side of the terrarium, since they create one with a warmer and a colder side.

All in all, I would suggest you get the heating mat for under the terrarium as to raise the temperature to fit the usual living conditions of your snake.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.