Index: firmware/App/Modes/ModeChemicalDisinfectFlush.c
===================================================================
diff -u -r9226e7b5b52c30057e93453ced523f563fbd89fe -rf502a589b7a6c39c6fd57ceee778f5c94481af14
--- firmware/App/Modes/ModeChemicalDisinfectFlush.c	(.../ModeChemicalDisinfectFlush.c)	(revision 9226e7b5b52c30057e93453ced523f563fbd89fe)
+++ firmware/App/Modes/ModeChemicalDisinfectFlush.c	(.../ModeChemicalDisinfectFlush.c)	(revision f502a589b7a6c39c6fd57ceee778f5c94481af14)
@@ -73,7 +73,6 @@
 #define CHEM_DISINFECT_FLUSH_TIME_MS                ( 12 * SEC_PER_MIN * MS_PER_SECOND )                       ///< Chemical disinfect flush time in ms.
 
 // Fill reservoirs to full defines
-#define RESERVOIR_FULL_VOLUME_CHANGE_LIMIT_ML       5.0F                                                       ///< The maximum difference between the short-term and long-term filtered reservoir volumes in ml that determines the reservoir is full.
 #define RESERVOIR_MINIMUM_FULL_VOLUME_ML            1850.0F                                                    ///< When filling the reservoir, the volume reading must be at least this value before checking for the volume to level off.
 #define RSRVRS_FILL_TO_FULL_STABLE_TASK_INT         ( ( 2 * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL )          ///< Reservoirs 1 & 2 full stable time in task intervals.