In the research on Bead Filtration Systems and the data shows that Bead Filtration is far superior to common pad, mat, or filamentous fiber or tubular filter medias at consuming all forms of waste products such as Ammonia and Nitrite, even at excessive and sometimes double loading of a ponds environment. The large media bed allows for an excessive accumulation of beneficial bacteria to consume very high amounts of ammonia and nitrite. From time to time (rarely) beads require replacement. Especially true if you accidentally let beads out of your sludge valve on the bottom. These are the same beads as specified for your Aquadyne filter.