Index: firmware/App/Drivers/GLXferPump.h
===================================================================
diff -u -rb32a3dbf0675bb3378e09105e3a80ea9a7779828 -reaff654b897f641b874e3ba30a22cbda3779e4a7
--- firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision b32a3dbf0675bb3378e09105e3a80ea9a7779828)
+++ firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision eaff654b897f641b874e3ba30a22cbda3779e4a7)
@@ -36,7 +36,7 @@
 #define AIR_PUMP_MOTOR_OFF          0               ///< Power level setting (PWM) for H12 air pump to turn pump off.
 #define AIR_PUMP_MOTOR_MAX_PWM      250             ///< Power level setting (PWM) maximum for H12 air pump.
 #define AIR_PUMP_MOTOR_FILL_PWM      25             ///< Power level setting (PWM) for H12 air pump to fill (raise level) the air trap.
-#define AIR_PUMP_MOTOR_LOWER_PWM    250             ///< Power level setting (PWM) for H12 air pump to lower the level of the air trap.
+#define AIR_PUMP_MOTOR_LOWER_PWM   125 //250             ///< Power level setting (PWM) for H12 air pump to lower the level of the air trap.
 
 // ********** public function prototypes **********