Index: firmware/App/Services/Reservoirs.c
===================================================================
diff -u -r669f36cf32c3b500aa2fd5b08c58ee5e6b2e7f08 -re8c019d3d43b517cabfdfe75fa5d03749d036018
--- firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision 669f36cf32c3b500aa2fd5b08c58ee5e6b2e7f08)
+++ firmware/App/Services/Reservoirs.c	(.../Reservoirs.c)	(revision e8c019d3d43b517cabfdfe75fa5d03749d036018)
@@ -669,11 +669,11 @@
 
     if ( tgtTotalFlowLPM > 0 )
     {
-        heatersTempCalc.tempFillMixAvgTrimmer = ( fillROAvgActual * ( tgtTotalFlowLPM / targetROFlowLPM ) ) -
-                                                ( ENVIRONMENT_TEMPERATURE_C * ( tgtAicdFlowLPM / targetROFlowLPM ) ) -
+        heatersTempCalc.tempFillMixAvgTrimmer = ( fillROAvgActual * ( tgtTotalFlowLPM / targetROFlowLPM ) )          +
+                                                ( ENVIRONMENT_TEMPERATURE_C * ( tgtAicdFlowLPM / targetROFlowLPM ) ) +
                                                 ( ENVIRONMENT_TEMPERATURE_C * ( tgtBicarbFlowLPM / targetROFlowLPM ) );
 
-        heatersTempCalc.tempRsrvr0ActualTrimmer = ( ( heatingConstsCalRecord.ultrafilterVolmL / targetFillVolML ) * tempUFFill ) +
+        heatersTempCalc.tempRsrvr0ActualTrimmer = ( ( heatingConstsCalRecord.ultrafilterVolmL / targetFillVolML ) * tempUFFill )        +
                                                   ( ( ( targetFillVolML - heatingConstsCalRecord.ultrafilterVolmL ) / targetFillVolML ) *
                                                         heatersTempCalc.tempFillMixAvgTrimmer );