Lee's Kritter Keeper, Large Rectangle with Lid, Colors may VaryLee's Rectangular Kritter Keepers may be used as space saving aquariums or insect havens, but are also ideal for use as kritter totes, terrariums or nurseries. Note: In order to remove the colored lid from the tank, please loosen by lifting up and away on each corner, being careful not to rest your arm or weight ontop of the lid as this will close any corners already lifted up. Carefully use one hand to loosen each corner and use your other hand to