I bought some 45 pound barbell weights at a garage sale to use as a boat mooring. They are in pretty good shape. I intend to leave them at the bottom of the lake; will they rust away? I don't care about some surface rust; I just don't want them to disappear.
If they will rust, I have some epoxy varnish. Presumably there will be no UV to degrade it; will it prevent the rust? Thanks.
(reading this, it sounds a bit silly; but I am serious)