No that is not the only difference, YOUR setup and what I recommended how completely different, with some animal 10 gallons even with fake plants just does not cut it, high fluctuation do not cut it either.
So you can either address the issues and solve the problem or keep doing what you are doing which obviously DOES NOT WORK, bottom line it's up to YOU, you're the one with an issue.
Hatchlings are voracious if they are not it is husbandry related 99% of the time.
I bought him as a pet, I'm not much into the tubs etc. How do I keep a 6 qt box 88 degrees with a hot spot? Do you have any in mind? Like I've said, I've done a lot of what is recommended but the cage thing. Never kept a snake in anything but a cage.