 Optimal fluid management is one of the primary objectives of dialysis treatment, and there is significant concern that peritoneal dialysis PD patients can become progressively fluid-loaded with time on treatment, especially as residual kidney function declines. Body Composition Monitor BCM has the potential to enable better management of fluid balance. The investigators undertake a prospective, randomized, open-label, controlled trial to determine whether availability of longitudinal BCM measures help clinicians maintain stable fluid status over 24 months in 300 peritoneal dialysis patients. 