Circulation filter / circulation water filter how to clean na? Good maintenance? Has been more concerned about consumer issues, today we have to talk about the water cycle filter / circulation water filter how to clean up. First, open the filter cover, you will see a second foam turn biochemical cotton, glass partitions, biochemical filter bags, charcoal, small particles of coral, the first to the second foam biochemical cotton for cleaning and processing, and then clean the glass partitions, the key lies in the biochemical filter bags to clean up clean-up, when cleaning with chemical and biological filtration must be careful, if biological filter bags are damaged, it will affect the water quality after filtration quality, so be careful. After the clean-up of these in turn put back on it.