Oase Biostyle Activated Carbon Booster Cartridge (83932)

Helps to remove cloudy water, harmful metals, odors, tannins or other colors for clear, pure aquarium water.

Activated carbon is processed to have small, low-volume pores that increase the surface area available for absorption of unwanted substances.

Carbon should be used only when needed and replaced after 3 to 4 weeks, depending upon aquarium size, number of fish and plants, and declines in filter performance.