Alright so right now I have my baby BP in a 15 quart tub. Im looking to upgrade to either a 20 gal long aquarium or a possible custom built wooden cage. I plan on building my own spray foam/concrete waterfall with a cave to put in it so humidity should be an issue. Any opinions on either? Any info or pros/cons would be appreciated, this is a tough decision because I plan on putting a lot of time into this for my BP to enjoy.