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- Jan 11, 2014
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Hi. The old units can be updated but we would ask you to send us the controllers for programming. The fee is $59 per controller. We can turn them around and back to you the same day. But if you already have the USB controller you can add the third pump and have fully linked controllability. Of course it’s easiest to use the twin knob setup. We also send the extra button with each program upgrade.So I have 3 of these in my tank. Two of them have one magnet on the controller and the other has two magnets. I have the older two programmed through the USB programming. Can the older units be upgraded to two magnet control?