How much sunlight should a terrarium get?

Keep your terrarium in a spot that gets plenty of indirect light, but will not be subject to direct sunlight. Terrariums, especially enclosed terrariums, are like mini greenhouses. Placing them in direct sunlight can cook plants quickly. If your terrarium is destined for a spot that receives little natural light, artificial light can be used. A 100W globe or fluorescent light can be placed near the terrarium. This should be on for 12 hours a day. Plants tend to grow toward the light source. To keep plants growing upright, quarter turn the terrarium monthly. Generally, succulents require more light than leafy plants.