well we may not be pond experts but we are quickly becoming experts on kitty litter---very interesting article JMC posted above---i have some db200 and walmart special kitty so i may try a couple of buckets --one plain litter and one db200+kitty litter about 1:10 (suggestions?) and water--then see what it does after 1 day, 1 week, 2 weeks. i would think even "fired" kitty litter would soften over enough time under water may not though as clay pots lasted a long time but i would doubt kitty litter would "fired" to that extent. still not sure if i'll use it or not---if i have to dig red ga. clay and use it then i may as well use it instead of kitty litter/bentonite. thanks all.