Economical, clear plastic tanks for use as aquariums or terrariums. No need to worry about the cracking or breakage problems associated with glass or rigid plastic. Ideal for multipurpose classroom use. Molded foot pegs prevent scratching and temperature transfer. Rounded corners provide for easy cleanup. No-drip cover design channels condensation back into the tank. All sizes are available with flat, perforated covers. The 11/2-gallon tank is also available with a domed cover to house larger plants. The domed cover has a dial-type ventilator for regulating humidity.