sera Glass Clear Large Magnetic Glass Cleaner Seachem Scraper Replacement Cartridge Begins to eliminate reactive phosphate

Begins to eliminate reactive phosphate immediately upon addition to aquarium

Compatible with 6 mm (1/4") - Standard Airline Tubing

They contain no phosphate or nitrate that would promote algae proliferation

for all herbivorous and omnivorous tropical fish

Not for use on acrylic aquariums

sera Glass Clear Large Magnetic Glass Cleaner Seachem Scraper Replacement Cartridge Begins to eliminate reactive phosphateThese magnets make cleaning the aquarium glass easy. The cleaning surface of the inner part removes the algae layers. The surface of the outer magnet is covered with a particularly fine synthetic mat that protects the glass. The magnets have an oar that allows attaching a piece of string for retrieving it. FOR USE WITH GLASS AQUARIUMS ONLY. SIZE: Large 60 x 110 mm (2. 4 x 4. 4 in.) for glass thickness up to 10 12 mm (0. 4 0. 5 in.)