Hello, I bought a used snake rack from a guy on craigslist. It's a very nice homemade rack with six shelves. It comes with a Vivarium Electronic VE-100 and heat cable that are nicely flushed on each shelf. Currently, I have four pythons in each tub (on each shelf) and when I used my thermogun, it shows 87 degree on 4th row (bottom), 83 on 3rd row, 90 on 2nd row and 88 on first row (top). This doesn't make any sense. I know that heat rises but that does not apply here.
Is it possible that the heat cable is no good? A friend recommended that I take out the heat cable and replace it with a heat tape. Your thoughts?