Never had knees problems. Do have an ankle that does some goofy sh*! sometimes. Hope for a speedy recovery for ya. Has your pond ever reach full yet? You might have said it but don't remember seeing a full pool picture.

The people who say I can't do it can just sit the @^#% down and watch me. Friends call me Rusto I also subscribe to pond boss mag. http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=504716#Post504716