I remember when this was the new rage. It is a great idea & I want to get another fish bowl going soon. Trudy (water lettuce, peace lily, spider plants & plain philodendron ivies make good water gardens)
Terrariums are great for plants that require moist, humid environments. Succulents don't usually prefer these types of conditions. Because succulents use their thick, fleshy leaves and stems to hold water, they don't need moist, humid conditions.