Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -r3111db0376f17b1a42022dcf537c787273ae3215 -r70f74dbd0ff1afe4bc8ef59b47a54369e140b1aa
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 3111db0376f17b1a42022dcf537c787273ae3215)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 70f74dbd0ff1afe4bc8ef59b47a54369e140b1aa)
@@ -36,10 +36,12 @@
 
 #define MAX_RESERVOIR_VOLUME_ML                           1900.0F                                        ///< Maximum allowed fluid in a reservoir in milliliters.
 #define MAX_RESERVOIR_DILUTION                            0.15F                                          ///< Maximum reservoir dilution limit.
-#define MAX_RESERVOIR_RECIRCULATION_450_MLP               1.1F                                           ///< Maximum reservoir recirculation limit <= 450mL/m.
+#define MAX_RESERVOIR_RECIRCULATION_400_MLP               1.1F                                           ///< Maximum reservoir recirculation limit <= 400mL/m.
+#define MAX_RESERVOIR_RECIRCULATION_450_MLP               1.15F                                          ///< Maximum reservoir recirculation limit <= 450mL/m.
 #define MAX_RESERVOIR_RECIRCULATION_500_MLP               1.2F                                           ///< Maximum reservoir recirculation limit <= 500mL/m.
 #define MAX_RESERVOIR_RECIRCULATION_550_MLP               1.3F                                           ///< Maximum reservoir recirculation limit <= 550mL/m.
 #define MAX_RESERVOIR_RECIRCULATION_600_MLP               1.4F                                           ///< Maximum reservoir recirculation limit <= 600mL/m.
+#define RESERVOIR_FLOW_400_MLP                            400.0F                                         ///< Reservoir flow rate 400mL/m.
 #define RESERVOIR_FLOW_450_MLP                            450.0F                                         ///< Reservoir flow rate 450mL/m.
 #define RESERVOIR_FLOW_500_MLP                            500.0F                                         ///< Reservoir flow rate 500mL/m.
 #define RESERVOIR_FLOW_550_MLP                            550.0F                                         ///< Reservoir flow rate 550mL/m.
@@ -414,8 +416,12 @@
     U32 targetDialysateFlowMLP = getTreatmentParameterU32( TREATMENT_PARAM_DIALYSATE_FLOW );
     F32 maxPercent = 0.0F;
 
-    if (RESERVOIR_FLOW_450_MLP >= targetDialysateFlowMLP)
+    if (RESERVOIR_FLOW_400_MLP >= targetDialysateFlowMLP)
     {
+        maxPercent = MAX_RESERVOIR_RECIRCULATION_400_MLP;
+    }
+    else if (RESERVOIR_FLOW_450_MLP >= targetDialysateFlowMLP)
+    {
         maxPercent = MAX_RESERVOIR_RECIRCULATION_450_MLP;
     }
     else if (RESERVOIR_FLOW_500_MLP >= targetDialysateFlowMLP)
@@ -570,7 +576,7 @@
         // Time to wait prior to next fill is depletion time - the whole group of how much time is needed to fill a reservoir +
         // the time it takes to wait for a reservoir to settle and the extra margin time for ramp up of the RO and drain pumps and
         // any other extra times.
-        if ( targetDialysateFlowMLP < RESERVOIR_FLOW_500_MLP )
+        if ( targetDialysateFlowMLP < RESERVOIR_FLOW_400_MLP )
         {
             timeWaitToFillMS = timeDepleteMS - ( getFillTimeMS() + RESERVOIR_SETTLE_TIME_MS + RESERVOIR_CYCLE_EXTRA_MARGIN_TIME_MS );
         }