Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -rf9a4906ada0b1ff467c23eb1e44784e343bdeca8 -r80542b5bd4c20d5898290dfcaf30a4cdb151f3e7
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision f9a4906ada0b1ff467c23eb1e44784e343bdeca8)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 80542b5bd4c20d5898290dfcaf30a4cdb151f3e7)
@@ -49,7 +49,7 @@
 #define PRE_TREATMENT_MIN_FILL_RESERVOIR_VOLUME_ML      125             ///< Fill reservoir to this volume minimum to prep volume during development.
 #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      1300            ///< Fill reservoir one to this volume (in mL) during pre-treatment mode.
-#define PRE_TREATMENT_FILL_RESERVOIR_TWO_VOLUME_ML      600             ///< Fill reservoir two to this volume (in mL) during pre-treatment mode.
+#define PRE_TREATMENT_FILL_RESERVOIR_TWO_VOLUME_ML      750             ///< Fill reservoir two to this volume (in mL) during pre-treatment mode.
 #define PRE_TREATMENT_FULL_RESERVOIR_VOLUME_ML          1500            ///< Fill reservoir to this volume minimum to prep volume during development.
 
 #define PRE_TREATMENT_FLUSH_COUNT                       2               ///< Number of flush cycles for each reservoir.