Suggestions for Raising Ambient Temperature with this Tub Setup Please!

[Slim]

Regarding why I chose a "taller" tub: like many people who opt for glass terrariums, I wanted to be able to see my snakes and provide a little extra headroom. No, I don't expect my snake to use all that space (I'm not sure anyone who has a 20 gallon long does...?), but I felt a larger tub it would make viewing easier. I read up on the debate between plastic tubs and glass terrariums and decided to opt for plastic. I felt this size was a "middle ground" between the advantages of plastic tubs and the size of glass tanks. That was my reasoning, at least!

I understand your thought process, but I think you are starting to see the difficulties involved with heating that extra airspace.