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Each sera siporax ring is composed of a highly porous material that ensures that a thick layer of outer bacteria develops and is supplied with nutrients and water for growth. As the inner pores fill-in, a low-oxygen thriving bacteria inhabits the ring centers. These break-down nitrate and release beneficial nitrogen into the water.
The large open-pored tunnel structure of sera siporax provides a natural living space for these microorganisms, which convert clumps of dead algae, uneaten food, and fish waste into ammonium.
The sera internal biofilter B was developed according to the requirements for optimal filtration. It is easily accessible from the top, so the prefilter media can be changed without disturbing the biologically active primary filter media. With its practical three chamber design (see previous page), this filter lets you exchange a variety of filter media, such as active carbon, as necessary, without dismantling the entire filter. The integrated surface skimmer of the sera internal biofilter B reliably removes organic waste and unwanted surface protein film.
You can achieve increased filtering performance from internal filters that use a sponge cartridge by using sera siporax in the primary filter chamber, and sera biofibres or sera biopur in the prefilter.
