Reptile carpet and aspen is too much. One or the other would be just fine. What happens is that your snake will dig under the aspen to the reptile carpet and the temps will be much higher there. I understand that it will be easier to clean, but the best way to do that is to put one layer of newspaper above the glass, put your temp sensor on top of the paper then cover the paper with aspen to less than 1 inch. just my