Discovery Crystal Aquarium - Rocks Grow to 4 inches. For ages 12+

Apart from a hands-on experience, this kit also makes children aware of fun facts about crystals & ground deposits. Set up time is 10 minutes For ages 12 & up 2 bottles growing solution (4.5 fl. oz./133 mL each) Growing rocks (0.44 oz./12.4 g) 1 background sticker sheet