Index: firmware/App/Modes/ModeFlush.c
===================================================================
diff -u -rd325999b7b3ea03b7e294cb8a0b97df93812fbe9 -rf7d8d74379a55ff917b5896627b20ec7c05c0c01
--- firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision d325999b7b3ea03b7e294cb8a0b97df93812fbe9)
+++ firmware/App/Modes/ModeFlush.c	(.../ModeFlush.c)	(revision f7d8d74379a55ff917b5896627b20ec7c05c0c01)
@@ -67,7 +67,7 @@
 #define BICARB_PUMP_SPEED_ML_PER_MIN                30.6F                                             ///< Bicarb pump speed in mL/min.
 
 // Flush and drain R1 and R2 state defines
-#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 * 60 * MS_PER_SECOND )                        ///< Reservoirs 1 & 2 full fill up timeout in ms.