A dialysis system includes: a dialysis fluid pump receptacle actuated by a dialysis fluid pump actuator; a dialysis fluid line; a blood filter in fluid communication with the dialysis fluid pump receptacle via the dialysis fluid line; an extracorporeal circuit; a blood pump receptacle actuated by a blood pump actuator and in fluid communication with the blood filter via the extracorporeal circuit; and a control unit that (i) in a first treatment pumps peritoneal dialysis fluid through the dialysis fluid pump receptacle, the dialysis fluid line, the blood filter, the extracorporeal circuit and the blood pump receptacle to the patient's peritoneum operating the dialysis fluid pump actuator and the blood pump actuator at a first pressure, and (ii) in a second treatment pumps blood through the extracorporeal circuit, the blood pump receptacle and the blood filter operating the blood pump actuator at a second, different pressure.