Yea kitty litter for $3.99.....cheap enough, but the wrong material no
matter what the case, why not use just dirt it would serve the same
purpose and is even cheaper and probably do just as good........ if
your so darned intent on using sodium bentonite for koi clay
substitute.... then any media would serve.............duh!

Yep, (I agree) why bother if it isn't going to give the results. For those
of us with koi that we want to bring out their colors to their fullest one
has to use the right stuff. ~ jan

~Power to the Porg, Flow On!~