I tested the bacterial pellets for afffects on black anaerobic sludge and reduction of overlying bottom organics. I did not test for affects upon filamentous or planktonic algae growth. The particular brand of pellets that I used came from GLB Inc of Wisconsin. Conclusions that I made were those particular pellets had very little affect on either black anaerobic sludge in gravel beach areas or on a unique form of organic / carbonate particulates that covered a beach swimming area.
As Shawn mentions some pondowners do see a reduction of FA with using SOME of the bacterial products. I think the type or species of algae problem can make a difference with the apparent results. Different algae have different growth - bloom requirements, so one time it may work and then not work if a different specie of algae is involved.
At times I have heard reports of visual reduction success with the bacterial products for accelerated digestion of bottom sludge. My summary is not enough documented and measured testing using controls and or replicated tests have been done with enough of the products to provide reliable purchasing information for consumers. None of the bacterial products come with guarantees - probably for a reason.
Last edited by Bill Cody; 07/30/08 08:58 PM.