I'm planning on getting a 40 gallon breeder aquarium and rescuing an adult ball python. Due to it being an aquarium, I plan on wrapping most of the screen top with either aluminum foil or plastic wrap (probably the later). However, to avoid the blunt of humidity issues, I was planning on using a substrate that holds humidity well, either a Cypress mulch or Coconut based. Anyone have any suggestions as to what I should use? And which is better, Coco Husk or Coco Fiber?