Index: firmware/App/Controllers/PermeateTank.c
===================================================================
diff -u -r30c175a7e10411efadb9b2b0f8b68528705e0621 -r44dbba513dffd7b1a997f873426407dbfc4163d1
--- firmware/App/Controllers/PermeateTank.c	(.../PermeateTank.c)	(revision 30c175a7e10411efadb9b2b0f8b68528705e0621)
+++ firmware/App/Controllers/PermeateTank.c	(.../PermeateTank.c)	(revision 44dbba513dffd7b1a997f873426407dbfc4163d1)
@@ -1,17 +1,17 @@
 /**************************************************************************
 *
-* Copyright (c) 2020-2024 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2025-2025 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
 * @file    PermeateTank.c
 *
-* @author  (last)      Sean Nash
-* @date    (last)      12-Nov-2024
+* @author  (last)      Michael Garthwaite
+* @date    (last)      03-Sep-2025
 *
-* @author  (original)  Sean Nash
-* @date    (original)  12-Nov-2024
+* @author  (original)  Michael Garthwaite
+* @date    (original)  25-Jul-2025
 *
 ***************************************************************************/
 
@@ -23,6 +23,7 @@
 #include "Timers.h"
 #include "Utilities.h"
 #include "Valves.h"
+#include "ROPump.h"
 
 /**
  *  @addtogroup FPPermeateTank
@@ -33,9 +34,10 @@
 
 #define PERMEATE_TANK_PUMP_DATA_PUB_INTERVAL         ( MS_PER_SECOND / TASK_GENERAL_INTERVAL )   ///< Interval (ms/task time) for permeate tank broadcast
 #define PERMEATE_TANK_PUBLISH_COUNTER_START_COUNT    9                                           ///< Publishing counter offset
-#define PERMEATE_TANK_FILL_SWITCH_MS                 ( 10 * MS_PER_SECOND )                      ///< state switch timeout in fill state ( in ms )
-#define PERMEATE_TANK_FULL_SWITCH_MS                 ( 1 * MS_PER_SECOND )                       ///< state switch timeout in full state (in ms)
-#define PERMEATE_TANK_FULL_TIMEOUT_MS                ( 60 * MS_PER_SECOND )                      ///< timeout being in full state too long ( in ms )
+#define PERMEATE_TANK_FILL_SWITCH_MS                 ( 10 * MS_PER_SECOND )                      ///< State switch timeout in fill state ( in ms )
+#define PERMEATE_TANK_FULL_SWITCH_MS                 ( 1 * MS_PER_SECOND )                       ///< State switch timeout in full state (in ms)
+#define PERMEATE_TANK_FULL_TIMEOUT_MS                ( 60 * MS_PER_SECOND )                      ///< Timeout being in full state too long ( in ms )
+#define PERMEATE_TANK_FILL_RO_PUMP_TGT_FLOW_ML       750                                         ///< Flow target in ml/min for the ro pump during permeate tank fill state.
 
 // ********** private data **********
 
@@ -335,10 +337,10 @@
         case PERMEATE_TANK_FULL_STATE:
             setValveState( M4_VALV, VALVE_STATE_CLOSED );
             setValveState( M7_VALV, VALVE_STATE_CLOSED );
-            setValveState( P6_VALV, VALVE_STATE_CLOSED );
+            setValveState( P6_VALV, VALVE_STATE_OPEN );
             setValveState( P11_VALV, VALVE_STATE_OPEN );
             setValveState( P33_VALV, VALVE_STATE_OPEN );
-            setValveState( P34_VALV, VALVE_STATE_OPEN );
+            setValveState( P34_VALV, VALVE_STATE_CLOSED );
             setValveState( P37_VALV, VALVE_STATE_CLOSED );
             setValveState( P39_VALV, VALVE_STATE_CLOSED );
             setValveState( P20_VALV, VALVE_STATE_CLOSED );