Can I control a dosing pump flow using a fan control?

The only issue might lie in the stated input voltage of the pump. It shows 12V instead of a variable input. Most motors like that will work with a varied input voltage, such as the fans, but that isn't universal.

You could use a PWM device to control the 12V to the pump.

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The diode and capacitor is to prevent backward current since motors will generate current.

They make brushless pumps too if you want a very long lasting pump.

As for the Fan controller, it'll work but not sure how accurate it is in controlling the pump.

I think I just go with a seconds timer relay.

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