Index: firmware/App/Modes/FPModes/ModeGenPermeate.c
===================================================================
diff -u -r76ede35cf15c9310c2915151f1d47998f22b71de -r2869d16c34888bec55bded3b8aefd0203f56d3b0
--- firmware/App/Modes/FPModes/ModeGenPermeate.c	(.../ModeGenPermeate.c)	(revision 76ede35cf15c9310c2915151f1d47998f22b71de)
+++ firmware/App/Modes/FPModes/ModeGenPermeate.c	(.../ModeGenPermeate.c)	(revision 2869d16c34888bec55bded3b8aefd0203f56d3b0)
@@ -274,13 +274,13 @@
 
     if ( state == FP_GENP_TANK_FILL_STATE )
     {
-        fillDutySum = duty;
-        fillDutyCount;
+        fillDutySum += duty;
+        fillDutyCount++;
     }
     else if ( state == FP_GENP_TANK_FULL_STATE )
     {
-        fullDutySum = duty;
-        fullDutyCount;
+        fullDutySum += duty;
+        fullDutyCount++;
     }
 }