3V-12V DC motor controlled by Apex.. is it possible?

Using Arduino Project Guidance
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I posted this in an aquarium forum (DIY section) but could not get any help, so I am hoping to make an Arduino version.

My situation is as follows:

I have a 12V DC motor, that can run on 3V-12V, plus a DC power source (Variable 12V).

I also have an aquarium controller called the Apex Jr. from Neptune Systems - It's a computer that controls various devices, mainly by turning them off and on. There is an add-on to this device, called the VDM, which has several ports called "0-10V variable speed ports". The ports are one serial, and two Ethernet jacks (That handle two inputs each). The only thing I do know is that these ports do not send power, but signals (PWM, I believe) to regulate voltage.

Is there a way I can construct an Arduino device that can interpret these signals and provide the appropriate voltage to my DC motor?

I have some experience coding and some electrical, from way back in the day, and am willing to do/relearn it for this project. I do not, however, have any experience with Arduino)

Thanks for any help!

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electrobes:
I posted this in an aquarium forum (DIY section) but could not get any help

Hmmm.

electrobes:
The only thing I do know is that these ports do not send power, but signals (PWM, I believe) to regulate voltage.

Is there a way I can construct an Arduino device that can interpret these signals and provide the appropriate voltage to my DC motor?

Possibly is, but the question would be - why?

The device you are seeking is called a FET. (Or transistor.)

You figure out what voltage the "Apex Jr." is delivering, find a FET that will be fully turned on at that voltage, and connect it so that it switches the - presumably - negative feed to the motor.

That's about it.

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