Sorry Roger, last question.
If you only have one stream connected to the controller then you only have the option to use pulse. Would you recommend you do this in 3 second pulses, basically I believe the unit will pulse for this period using a speed between the 2 speeds you have set on the bottom 2 dials (min and max). This will change every 3 seconds to a different value between the 2, but just ensure that the lowest speed is over 30% - is that correct......im sure all this is in the information documents but I have lost them......