Index: firmware/App/Drivers/GLXferPump.c
===================================================================
diff -u -r0afeba28589108c3f742079a87bac313c4983b0c -reaff654b897f641b874e3ba30a22cbda3779e4a7
--- firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision 0afeba28589108c3f742079a87bac313c4983b0c)
+++ firmware/App/Drivers/GLXferPump.c	(.../GLXferPump.c)	(revision eaff654b897f641b874e3ba30a22cbda3779e4a7)
@@ -28,7 +28,7 @@
 
 // ********** private definitions **********
 
-#define AIR_PUMP_PWM_TIME           250               ///< Time (in 10ns increments) per PWM register count for the air pump = 20 kHz.
+#define AIR_PUMP_PWM_TIME           20                ///< Time (in 10ns increments) per PWM register count for the air pump = 20 kHz.
 
 // ********** private data **********