I'm a bit confused on what the acceptable dimensions would be for an adult male mainland retic. Some people have told me a 6'x2' is the bare minimum while others recommend the 4'x2' vision 400 enclosures. I can buy that being acceptable because although retics get long, they're not as heavily built as other large boids. I'd love to use the vision 400 obviously but I'm more inclined to go for the 6'x2'. Thanks for your answers!