Wow, 500 gallons!
Jumping right into the hobby with such a big project is pretty risky.
The experience one gains by doing things in succession is key. There are thousands of little things that a new hobbyist will learn as they begin to try new things and learn from their mistakes. These things will dictate the success or failure of such a project. I’m not saying it’s impossible… I would just try something smaller first. Also as time goes on, your talent as a “terrarium constructor” will grow and you may end up hating your first few tanks. At least that's what happens with me...
Jumping right into the hobby with such a big project is pretty risky.
The experience one gains by doing things in succession is key. There are thousands of little things that a new hobbyist will learn as they begin to try new things and learn from their mistakes. These things will dictate the success or failure of such a project. I’m not saying it’s impossible… I would just try something smaller first. Also as time goes on, your talent as a “terrarium constructor” will grow and you may end up hating your first few tanks. At least that's what happens with me...