otto--of all products i have looked at including kitty litter from walmart--the db100 and 200 are by far the cheapest--some places sell basically the same product for twice the price. i am almost spent out on pond right now--i will gamble another 2 to 3 grand but will stop after that and focus on other things. so i am hoping my research and choice of what remedy to pursue will be the right one. i lost my fist stocking of fish--i hate to think of losing this stocking too. thanks again.
