Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -ra4436011a3f30a7b20474c3ddb4d4373ac4b87b6 -r43d1739837a207e6d4d2960f3f0442af85b22a8c
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision a4436011a3f30a7b20474c3ddb4d4373ac4b87b6)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 43d1739837a207e6d4d2960f3f0442af85b22a8c)
@@ -30,8 +30,6 @@
 #define RESERVOIR_DEPLETION_INTERVAL                      ( MAX_RESERVOIR_DEPLETION_TIME_MS / TASK_GENERAL_INTERVAL )   ///< Interval (ms/task time) for maximum allowed depletion time.
 
 #define DIALYSATE_FLOW_RATE_350_ML_PER_MIN                0.35F                                          ///< Dialysate flow rate 350 mL/min.
-#define DIALYSATE_FLOW_RATE_400_ML_PER_MIN                0.4F                                           ///< Dialysate flow rate 400 mL/min.
-#define DIALYSATE_FLOW_RATE_500_ML_PER_MIN                0.5F                                           ///< Dialysate flow rate 500 mL/min.
 #define DIALYSATE_FLOW_RATE_550_ML_PER_MIN                0.55F                                          ///< Dialysate flow rate 550 mL/min.
 #define TGT_FILL_FLOW_FOR_DIA_FLOW_100_TO_350_ML_PER_MIN  0.5F                                           ///< Target fill flow rate for dialysate flow rates in between 100 to 350 mL/min.
 #define TGT_FILL_FLOW_FOR_DIA_FLOW_550_TO_600_ML_PER_MIN  0.8F                                           ///< Target fill flow rate for dialysate flow rates in between 500 to 600 mL/min.
@@ -297,16 +295,16 @@
     {
         fillFlowRate = TGT_FILL_FLOW_FOR_DIA_FLOW_100_TO_350_ML_PER_MIN;
     }
-    else if ( ( dialysateFlow >= DIALYSATE_FLOW_RATE_400_ML_PER_MIN ) && ( dialysateFlow <= DIALYSATE_FLOW_RATE_500_ML_PER_MIN ) )
+    else if ( dialysateFlow >= DIALYSATE_FLOW_RATE_550_ML_PER_MIN )
     {
+        fillFlowRate = TGT_FILL_FLOW_FOR_DIA_FLOW_550_TO_600_ML_PER_MIN;
+    }
+    else
+    {
         // fill flow = 10 x dialysate_flow ^ 2 - 7.5 x dialysate_flow + 2.0
         fillFlowRate = pow( dialysateFlow, 2 ) * DIA_FLOW_TO_FILL_FLOW_SECOND_ORDER_COEFF -
                             dialysateFlow      * DIA_FLOW_TO_FILL_FLOW_FIRST_ORDER_COEFF  + DIA_FLOW_TO_FILL_FLOW_CONSTANT;
     }
-    else if ( dialysateFlow >= DIALYSATE_FLOW_RATE_550_ML_PER_MIN )
-    {
-        fillFlowRate = TGT_FILL_FLOW_FOR_DIA_FLOW_550_TO_600_ML_PER_MIN;
-    }
 
     targetFillFlowLPM = fillFlowRate;