Index: firmware/App/Controllers/SpentChamberFill.c
===================================================================
diff -u -ra7014f4b673da08de179efcdf68ac8c854fe5757 -r56410a2475a4a6d1aa93642c630cdf37683d3231
--- firmware/App/Controllers/SpentChamberFill.c	(.../SpentChamberFill.c)	(revision a7014f4b673da08de179efcdf68ac8c854fe5757)
+++ firmware/App/Controllers/SpentChamberFill.c	(.../SpentChamberFill.c)	(revision 56410a2475a4a6d1aa93642c630cdf37683d3231)
@@ -39,7 +39,7 @@
 // ********** private definitions **********
 
 #define SPENT_CHAMBER_FILL_DATA_PUBLISH_INTERVAL           ( 250 / TASK_GENERAL_INTERVAL )      ///< Interval (ms/task time) at which the balancing chamber data published.
-#define SPENT_CHAMBER_SWITCHING_PERIOD                     59                                   ///< Spent Chamber Fill Switching Period to max dialysate flow rate (Qd: 600) to stabilize the valve closure
+#define SPENT_CHAMBER_SWITCHING_PERIOD                     59                                   ///< Spent Chamber Fill Switching Period to max dialysate flow rate Qd: 600 minus 50ms to stabilize the valve closure
 
 // ********** private data **********