Hobby Absorbex micro is a biological filter material for freshwater and marine water aquariums. Absorbex micro works in an absorptive manner, i.e. damaging agents are broken down by aerobic and anaerobic bacteria, for which the material offers a large breeding area.
Zeolith is a solid natural stone which contains many pores, cavities and channels. Hobby Zeolith works in an adsorptive manner, i.e. environmental toxins and decayed products are directly attracted and retained by the system of cavities through strong electrostatic fields (e.g.
Hobby Phosphat-Killer is a specially treated natural stone that reduces the level of phosphate in the water. Higher phosphate concentrations can have various reasons. In the natural habitat of fish and plants phosphate compounds are onlyfound in very small quantities (0.001-0.01 mg/l).
High concentration of nitrates causes growth of algae in aquariums. If there is a lack of CO² there is also the danger that nitrates could be reduced to nitrites which are highly poisonous for fish. Hobby nitrate killer quickly removes nitrates from the water by ion exchange and this is not given off in the aquarium water again.
Hobby Zeo Carbon aktiv is a highly-effective multi-purpose filter substrate made up of high-quality activated carbon and extremely fine zeolite. Hobby Zeo Carbon aktiv removes odours, medicinal residues, chlorine and organic waste materials that arise through conversion. It moreover reduces the phosphate and ammonia content of the water and promotes a rapid bacterial culture.
