Index: firmware/App/Modes/ModeHeatDisinfect.c
===================================================================
diff -u -r12ccb89bb747b00db71fff51238a245855c5d913 -rf245559b20c86cef55138c439c53c643bbb4fea3
--- firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision 12ccb89bb747b00db71fff51238a245855c5d913)
+++ firmware/App/Modes/ModeHeatDisinfect.c	(.../ModeHeatDisinfect.c)	(revision f245559b20c86cef55138c439c53c643bbb4fea3)
@@ -74,7 +74,7 @@
 #define BICARB_PUMP_SPEED_ML_PER_MIN               -30.0F                                                      ///< Bicarb concentrate pump speed in mL/min.
 
 // Flush and drain R1 and R2
-#define RSRVRS_FULL_VOL_ML                         1900.0F                                                     ///< Reservoirs 1 & 2 full volume in mL.
+#define RSRVRS_FULL_VOL_ML                         1850.0F                                                     ///< Reservoirs 1 & 2 full volume in mL.
 #define RSRVRS_PARTIAL_FILL_VOL_ML                 500.0F                                                      ///< Reservoirs 1 & 2 partial volume in mL.
 #define RSRVRS_FULL_STABLE_TIME_COUNT              ( ( 4 * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL )           ///< Reservoirs 1 & 2 full stable time in counts.
 #define RSRVRS_FILL_UP_TIMEOUT_MS                  ( 5 * SEC_PER_MIN * MS_PER_SECOND )                         ///< Reservoirs 1 & 2 full fill up timeout in ms.