This Poly 330 Gallon Water Tank is the largest water tank offered by Detail King. This water tank is the "Big Daddy" for procuring commercial accounts at dealerships and parking garages. Whether you're trying to do 50 exterior washes daily or replenish Lake Superior, this is ideal water tank for you! With this tank you will never again have to worry about, your water conservation and for some with past experiences . . . getting only half way done with an exterior wash.