Cleaning is based on biological microbial activity that occurs in the filter elements. With their help, the biofiltration process (biofilm) that usually works in nature in a small space is improved. Microbes in the elements remove organic matter, nutrients biologically.
BioBox filters are cleanable - they have a lifespan of 10-15 years, after which the filter pack in the unit is renewed. The lifespan of the device itself is 50-100 years!