A method for providing a peritoneal dialysis treatment that regenerates therapy fluid includes coupling a single fluid circuit having a cleaning cartridge to a peritoneal cavity of a patient, feeding a first amount of therapy fluid into the single fluid circuit, circulating the first amount of therapy fluid multiple times through the single fluid circuit and the peritoneal cavity of the patient, removing a therapeutically effective amount of solutes and ultrafiltrate from the patient using the first amount of therapy fluid, cleaning the first amount of therapy fluid using the cleaning cartridge, removing an amount of fluid from the single fluid circuit, the amount of fluid including at least most of the removed solutes, and feeding a second amount of therapy fluid into the single fluid circuit, the second amount of therapy fluid being approximately equal to the amount of fluid removed from the fluid circuit.
