Explore simple chemical reactions that result in gorgeous crystal formations with the Discovery crystal aquarium! Decorate and personalize the see-thru aquarium with a fun graphic background and decals, then combine the crystal growing solution and crystal growing seeds. Watch as the crystals grow before your very eyes! After a few hours Your blue, pink, green and yellow crystal creations will be sparkling. Experience the fascinating science behind crystal formations and encourage observation and curiosity with this hands-on activity kit. Recommended for scientists 12 and up.