This was an episode that focused primarily on the future Aqua-Man.
It was relatively good, in the fact that the graphics in the water of them swimming very fast were pretty good.
You might say that it didn’t have anything to do with Clark Kent’s history, but IMO, Aqua-Man helped Clark see what Lex was doing to the sea-life, and it convinced him that Lex was not the person he thought he was. Although, if you really think about it, Lex might not have turned out so bad, if Clark wasn’t around to make Lex get so interested in the Supernatural.
Oh well, it was a pretty good episode, in that it further split Clark and Lex’s friendship.