Thats an amelanistic cornsnake, or amel for short. Care for them is super easy. Keep warm spot around 80-85 and cool spot 10 degrees cooler.

During the summer, I actually just keep mine at room temparature, which is around 78-82. Its not cool enough to have a "cool" side, and there's no need for the heat to be on. I'm not familiar with hognose care, so can't comment. There's a good caresheet here on BP.net worth checking out.