Index: firmware/App/Controllers/MixingControl.c
===================================================================
diff -u -ra2180eecf9ed0c62849131ee19715c04d2dcbf22 -r575a1afb144e9a586f0860a1c8c9db6af940110e
--- firmware/App/Controllers/MixingControl.c	(.../MixingControl.c)	(revision a2180eecf9ed0c62849131ee19715c04d2dcbf22)
+++ firmware/App/Controllers/MixingControl.c	(.../MixingControl.c)	(revision 575a1afb144e9a586f0860a1c8c9db6af940110e)
@@ -48,7 +48,7 @@
 // drybicarb mixing
 #define BICARB_VOL_CONTROL_P_COEFFICIENT            ( 0.00008484F * 2 )                                     ///< Bicarb proportional gain (kp)
 #define BICARB_VOL_CONTROL_I_COEFFICIENT            ( 0.00033936F / 4 )                                     ///< Bicarb integral gain. (ki)
-#define MIN_BICARB_VOLUME_ML                        0.868686869                                             ///< Minimum bicarb volume in mL
+#define MIN_BICARB_VOLUME_ML                        0.4F                                                    ///< Minimum bicarb volume in mL
 #define MAX_BICARB_VOLUME_ML                        1.8F                                                    ///< Maximum bicarb volume in mL
 
 #define ACID_VOL_CONTROL_P_COEFFICIENT              ( 0.00000997F / 2 )                                     ///< Acid proportional gain (kp)
@@ -71,6 +71,8 @@
 
 #define BICARB_MIX_CONTROL_INTERVAL_MULTIPLIER      ( 3 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )           ///< Interval (ms/task time) at which the bicarb mix is controlled.
 #define ACID_MIX_CONTROL_INTERVAL_MULTIPLIER        ( 5 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )           ///< Interval (ms/task time) at which the dialysate mix is controlled.
+//#define BICARB_MIX_CONTROL_INTERVAL                 ( 9 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )           ///< Interval (ms/task time) at which the bicarb mix is controlled.
+//#define ACID_MIX_CONTROL_INTERVAL                   ( 15 * MS_PER_SECOND / TASK_GENERAL_INTERVAL )          ///< Interval (ms/task time) at which the dialysate mix is controlled.
 
 #define BICARB_DEADBAND_CONTROL                     15.0F                                                   ///< Bicarb dead band control
 #define ACID_DEADBAND_CONTROL                       50.0F                                                   ///< Acid dead band control