Cactus Planters Buliding A Terain Inside A Tank Or Pot---like A Mini Bio Dome For Plants And Such?

Buliding a terain inside a tank or pot---like a mini bio dome for plants and such? - cactus planters

I have people before they see a pot with an aquarium, put a little sand and cactus in it --- no one right way to build a bio-mini-dome, "as the (sort of) that if I am interested to know how
All links to Web sites, how to grow cacti, or how to create a mini-bio-dome construction would be very grateful!