A dialysis system includes a dialysis instrument including at least one pump actuator; a disposable cassette operable with the at least one pump actuator, a plurality of supply lines connected to the disposable cassette, each supply line including a supply line connector and a supply line tip protector; a plurality of dialysis fluid containers, the dialysis fluid containers each including a solution line having a solution line connector and a solution line tip protector; and an auto-connection mechanism including a solution line connector holder, a supply line connector holder, one of the holders fixed, the other of the holders moveable, and a moveable tip protector remover.