Index: firmware/App/Controllers/ConcentratePumps.c
===================================================================
diff -u -r9ff264727fa3cdaf78abb373373f9364517d48af -r31cbf1df21319c7ba5d82b3fc5fd20349e0d1619
--- firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 9ff264727fa3cdaf78abb373373f9364517d48af)
+++ firmware/App/Controllers/ConcentratePumps.c	(.../ConcentratePumps.c)	(revision 31cbf1df21319c7ba5d82b3fc5fd20349e0d1619)
@@ -39,9 +39,9 @@
 #define CONCENTRATE_PUMP_MIN_SPEED                          3.0F                                                ///< Minimum speed for concentrate pump in mL per min.
 #define CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_ON_PCT   0.01F                                               ///< Concentrate pump speed out of range tolerance when on in percentage.
 #define CONCENTRATE_PUMP_CLEANING_SPD_OUT_OF_RANGE_TOL_PCT  0.05F                                               ///< Concentrate pump cleaning mode speed out of range tolerance when on in percentage.
-#define CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_SLOW_MLPM 1.0F                                               ///< Concentrate pump speed out of range tolerance when slow in mL/min.
-#define CONCENTRATE_PUMP_LOW_SPEED_THRESHOLD_MLPM           10.0F                                               ///< Concentrate pump low speed threshold in mL/min.
-#define CONCENTRATE_PUMP_ZERO_FLOW_RATE                     0xFFFF                                              ///< Pulse width value when zero flow rate or pump is off.
+#define CONCENTRATE_PUMP_SPD_OUT_OF_RANGE_TOL_WHEN_SLOW_MLPM 0.5F                                               ///< Concentrate pump speed out of range tolerance when slow in mL/min.
+#define CONCENTRATE_PUMP_LOW_SPEED_THRESHOLD_MLPM           5.0F                                                ///< Concentrate pump low speed threshold in mL/min.
+#define CONCENTRATE_PUMP_ZERO_FLOW_RATE                     0xFFFFFFFF                                          ///< Pulse width value when zero flow rate or pump is off
 #define CONCENTRATE_PUMP_VOLUME_PER_REV_DIENER              0.4F                                                ///< Volume output every revolution (mL).
 #define CONCENTRATE_PUMP_VOLUME_PER_REV                     0.1F                                                ///< Volume output every revolution (mL).