Why: Most carnivorous plant growers start off in the hobby using some sort of a terrarium, such as an aquarium, and artificial lighting. The primary benefit is that it is easy to maintain high humidity in a mostly sealed box. A terrarium can also help stabilize the temperature.

Drawbacks: There are several drawbacks of growing carnivorous plants in a terrarium. The first is that these conditions produce an increased risk of mold, which may result in plant death. A sealed terrarium also does not let insects in and therefore plants must be manually fed. Finally, there is little/no exchange of air and therefore the terrarium may also overheat.

Watering: Rain, reverse osmosis (RO), or distilled water is mandatory when growing plants, especially carnivorous plants, in a sealed container. Using water with any amount of dissolved salts, such as tap or well water, will eventually kill your plants. 

Light: The best lighting to use for a terrarium is an east facing window or high-output LED lights. I have had great success with the lights produce by Sansi.