Index: firmware/App/Modes/ModeDrain.c
===================================================================
diff -u -r025612ad77fe630889a364586de54bffe5262d56 -r557f409455dde035899c9f89a8b93f57e8eb7f2b
--- firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision 025612ad77fe630889a364586de54bffe5262d56)
+++ firmware/App/Modes/ModeDrain.c	(.../ModeDrain.c)	(revision 557f409455dde035899c9f89a8b93f57e8eb7f2b)
@@ -19,6 +19,7 @@
 #include "ConductivitySensors.h"
 #include "DrainPump.h"
 #include "Heaters.h"
+#include "ModeFill.h"
 #include "ModeDrain.h"
 #include "OperationModes.h"
 #include "Pressures.h"
@@ -246,6 +247,15 @@
         }
         else
         {
+            if ( TRUE == isEmptyAcidBottle() )
+            {
+                activateAlarmNoData( ALARM_ID_DG_ACID_BOTTLE_LOW_VOLUME );    // trigger empty acid bottle alarm
+            }
+            else if ( TRUE == isEmptyBicarbBottle() )
+            {
+                activateAlarmNoData( ALARM_ID_DG_BICARB_BOTTLE_LOW_VOLUME );  // trigger empty bicarb bottle alarm
+            }
+
             requestNewOperationMode( DG_MODE_GENE );
         }
     }