HOBBY ZEOLITH 500G Scraper dual surface algae pad for

dual surface algae pad for glass and acrylic

including a filter location that ensures the water is circulated effectively

Biochemical filtration

DIRECTIONS:Use 1/2-1 capful (2

The filter light is not only waterproof

HOBBY ZEOLITH 500G Scraper dual surface algae pad forZeolith 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