Yes it works very fast. Within hours I could tell a difference in color. I hope it works out good for ya. Mine is starting to come back already.

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