HOBBY ZEOLITH 500G Scraper Biochemical filtration

Biochemical filtration

or red and black with white

so they reach the fish quickly

nitrite ions & nitrate ions rapidly for the purpose of removing poisonous ammonia

HOBBY ZEOLITH 500G Scraper Biochemical filtrationZeolith 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. up to 90% of ammonia). Zeolith has a huge internal surface area. Approx. 10 gram corresponds to the size of 4 football pitches. The cavities are 4 millionths of a millimetre