Cleaning dug coins

This is a 1976 lincoln I dug from Georgia soil a couple of weeks ago. My first time using electrolysis cleaning. Is there a better way to clean a coin like this for display? Before and after pictures. I used stainless steel for the anode, tap water with lemon juice mixed for the electrolyte about 20 minutes of treatment.

 

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Second pic is a bit washed out due to the flash, but it looks like it did a really good job.

 

I just run my clad through a tumbler for anything silver I usually just wash with water. I did have to dip a 1909 barber dime I found under a gum tree root in SC that the root had turned so black you couldn't really enjoy the coin. Ice

 

Is that a rock tumbler? My parents used to be rock hounds. What grit do you use on copper? Is it different for silver?

 

The lemon juice combo seems to work very well!!

 

It is a rock tumbler and I use white aquarium gravel, water and a little dish soap. Just tumble Copper seprate or all the coins will look copper colored. Ice

PS here's a link to a nice metal detecting forum I go by Icewater.
http://www.treasurequestxlt.com/community/

 

Cool, thanks for the info and the link.