Pretty good results. Pond water is on the 'Soft' side but that is typical for most Southern states and is only a concern when heavy metals are present at problem levels.
One note: your well water at a pH of 7.8 is nowhere close to neutral. Since pH is a logarithmic scale, a difference of one pH unit is equivalent to a tenfold difference in hydrogen ion concentration. You must test for Alkalinity to determine how much lime to add. Never, never, never blindly administer any kind of water treatment, ALWAYS test first.