You have to give it time to see noticeable progress. IMO agitating the bottom with a lake rake or similar tool prior to adding the bacteria helps redistribute the sediments, infuses oxygenated water into the bottom sediments and allows better decompositon. Regularly agitating the worst offending sediment areas speeds decomposition. More bang for the buck: Try adding a few ounces of bacteria blends to some roiled pond water(bacteria food) let it culture to grow many times more bacteria in the bucket for several hours. Then distribute it to areas of the pond. Remember agitated bottom areas will see the best benefits.
