Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -rf1253893206dece006b6bdb47ccdc22574cdbda9 -r19aba08f16ac2b5de18be8965767966e9698d03a
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision f1253893206dece006b6bdb47ccdc22574cdbda9)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 19aba08f16ac2b5de18be8965767966e9698d03a)
@@ -48,7 +48,7 @@
 
 #define PRE_TREATMENT_FLUSH_RESERVOIR_VOLUME_ML         500             ///< Fill reservoir to this volume (in mL) to flush filter and lines.
 #define PRE_TREATMENT_FILL_RESERVOIR_ONE_VOLUME_ML      900             ///< Fill reservoir one to this volume (in mL) during pre-treatment mode.
-#define PRE_TREATMENT_FILL_RESERVOIR_TWO_VOLUME_ML      900             ///< Fill reservoir two to this volume (in mL) during pre-treatment mode.
+#define PRE_TREATMENT_FILL_RESERVOIR_TWO_VOLUME_ML      1100            ///< Fill reservoir two to this volume (in mL) during pre-treatment mode.
 
 /// States of the pre-treatment reservoir management state machine.
 typedef enum PreTreatmentReservoirMgmt_States