OK, so I have the Breeze 5 Fan and the controller. I'm plugged in to the L1 and the fan is running. Fan starts and stops when the temperature rises above and drops below my nominal value of 79. Problem is that the fan speed does not seem to change as the temperature rises. My tank started off at 78.8 this morning. After the lights came on the tank temperature rose to +79 and the Breeze 5 started running. The tank temperature is now 81.3 and the Breeze 5 is running at the same speed. As a test I plugged the Breeze 5 directly into the power bar without the controller attached and it runs much faster. 1-10V interface is set up to: Temperature 1 / Controller Output / Breeze 5 / U-min 1V - U-max 10V. The Breeze 5 is plugged into S5 set to always on. So why won't my fans max out?