Still not allowed to use my arm much because of the broken collar bone, I am doing small projects to keep busy.
I took a look at the Hart Tank Tender, 10 tanks, and other than being a little dirty, it all works.  Tested it in some buckets of water.  Works great.  Didn't realize how expensive they are till I started looking up new tubing.  Much was lost when the boat was deconstructed and I don't know what went into what tanks.  So now I am looking for 1/8" nylon tubing.  It works with simple air pressure, no electronics.  But costs about $1,000.  Now I just need tubing.