The Rena Filstar activated carbon pouch removes dissolved organic waste that stresses tropical fish and discolors aquarium water. Super activated carbon is made especially for filtering aquarium water and has 5 times the absorptive power of standard charcoal. Can be used with BioChem Zorb or other Rena Filstar chemical filters to produce a customized solution to your water quality problems. This produces a healthier environment for your fish and a clean, clear aquarium for you.
