Index: firmware/App/Drivers/GLXferPump.h
===================================================================
diff -u -r82bb2222f791a434d22921e2fe4f5edd7e74776d -rb32a3dbf0675bb3378e09105e3a80ea9a7779828
--- firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision 82bb2222f791a434d22921e2fe4f5edd7e74776d)
+++ firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision b32a3dbf0675bb3378e09105e3a80ea9a7779828)
@@ -35,8 +35,8 @@
 
 #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     100             ///< Power level setting (PWM) for H12 air pump to fill (raise level) the air trap.
-#define AIR_PUMP_MOTOR_LOWER_PWM    100             ///< Power level setting (PWM) for H12 air pump to lower the level of the air trap.
+#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.
 
 // ********** public function prototypes **********