This is the two tank replacement for MB618 Plus filter. The purchase price is based on Custom Pure receiving spent tanks of resin. We regenerate and reuse this material. The shipping rate includes return shipping for spent resin tanks.
Simply place the order for your replacement tanks. We will ship them to you in a re-useable plastic tote. When you have completed the tank exchange, put your used resin tanks back in the tote. When you let us know you are ready, we will notify UPS to come pick up the used tank.