Index: firmware/App/Modes/ModePreTreat.c
===================================================================
diff -u -r3829c8e7071a932cf3400eace41633a03b80741e -rc7f4ad020dbbdca975001dfddb2d402baf45d1a6
--- firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision 3829c8e7071a932cf3400eace41633a03b80741e)
+++ firmware/App/Modes/ModePreTreat.c	(.../ModePreTreat.c)	(revision c7f4ad020dbbdca975001dfddb2d402baf45d1a6)
@@ -49,7 +49,7 @@
 #define PRE_TREATMENT_MIN_RESERVOIR_VOLUME_ML           400             ///< 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      1200            ///< Fill reservoir one to this volume (in mL) during pre-treatment mode.
-#define PRE_TREATMENT_FILL_RESERVOIR_TWO_VOLUME_ML      800             ///< Fill reservoir two 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_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.