Aquaforest Carbon 5000ml Marine Lighting Bio-Tet is a broad spectrum

Bio-Tet is a broad spectrum antibiotic for treatment of infectious diseases in marine and freshwater aquaria

With Kessil Logic

And without trapped aquarium water inside the scraper it will never develop odors from growing bacteria

Dimensions 4" x 2

Aquaforest Carbon 5000ml Marine Lighting Bio-Tet is a broad spectrumHigh quality granulated active carbon. Eliminates undesirable chemical compounds in marine and freshwater aquariums. Carbon should be placed in flow filters in 100 ml for 100 l (27 US gal.) of water in marine aquarium or 200 l (54 US gal.)in freshwater aquarium. The insert should be replaced every 4 weeks.