Shawn, FYI, after doing much research, the few bacteria makers that specify their ingredients, have vastly different amounts of CFU's(colony forming units) of bacteris per gram, oz. or whatever. =I think what Jeff is talking about, if I remember correctly, is pellets placed directly on sludge out of the water. The bacteria you are using is placed in the pond in the presense of aeration to feed their multiplication. Ridex has the fewest numbers of bacteria per unit of wt. of any I have seen, but as you said, it is cheap and if it works for some, who is to question. There is no doubt that bacteria and enzymes will help rid a body of water of excess nutrients. I have seen the results on several ponds.