Ya, I agree with this. RHPs are great products and i personally use them in my setups but i just haven't experimented with them as sole heat sources, which is why I mentioned that it was my just my opinion. People have different methods of keeping snakes so it's always good to hear what people have to offer as advice and hear what they have had success with. There's nothing wrong with experimenting a little bit to see what is effective and what isn't. Cool to hear that RHP's are working well as sole heat sources in AP cages and I wonder how effective they are as sole heat sources in glass setups? I just picked up a normal female and shes in a temporary glass setup while i work on building an enclosure for her so maybe I'll mess around with it a bit and see how the RHP performs by itself, maybe i'll learn something new from it. I know the OP also mentioned that they would change out the large RHP for a smaller one to aid in creating that heat gradient.