Robert,
Just being a Devil's advocate here but do you really have evidence of sediment reduction with the bacteria? I have used bacteria too, but was always been under the impression that it reduced the accumulation of the sediment -- not the existing sediment. I have not seen any studies to back this up. Have you?

Like I said I have no doubt that the bacteria used in conjunction with aeration can reduce sediment from accumulating and outcompete algae, but I'm skeptical in them reducing already existing sediment.

If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.