Flex-Tank (Field/Classroom Observation Container)
A perfect solution for those looking for an unbreakable field observation container or inexpensive terrarium. Flex-Tanks can be stacked together like buckets for convenient storage or for carrying any number of them into the field. Made from clear, flexible plastic, Flex-Tanks hold 1½ gallons and measure 11" x 7" x 5" high. Covers for the Flex-Tank are available separately (see Related Products, below).