I have another question. It might be a dumb idea (not my 1st or last). After the clay has settled at the bottom can it be pumped out? Just thinking if someone can get out most of the unpacked clay out. Maybe the effects will last longer. Not sure how I would go about it but also know if there's a will theres a way.

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