Suppose that I wanted to electroplate out the silver onto a cathode; could I put the used fixer solution in a plastic tub, attach metallic electrodes to either side of the container, and connect an appropriate DC current source?

What would be the 'best' electrode materials, considering both cost and efficiency; and what is the voltage needed?

Also, are there any gasses produced in the reaction that I would need to be concerned about, such as hydrogen?