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Yes, I have heard of these "smart" controllers.Our solar wata has a controller that turns the pump on/off depending on temp in the panels so it is not running all the time but it will not pump if the water in the tank is more than the panels, The controller will also pump if the temp gets into minus numbers in the winter, which uses heat in the tank to put a little warm in the panels to make sure they don't freeze. Its a clever box of tricks.
I have just looked at the pump and if you were to describe the flow-speed as a clock face then the minimum is at the 8-O'Clock, the "Auto" (allegedly "Smart") setting is to be found at 12-O'Clock and "Balls-Out-Maximum" is at 4-O'Clock.
It is now set at 4-O'Clock. , let's see what happens tomorrow morning.