What is the Alternative to magnetic stirrer for making Colloidal Silver?

Using a small aquarium air pump attached to a bubbler stone that I purchased from here:

The same item "Fusion Air Pump 200 Aquarium Air Pump" is also available from Amazon.

A small motor to rotate the water container around the the rods, works wonderfully, scrubs the rods with water continuously.

For more details, please check:

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