Activated filter carbon in pellet form

Super Grade (Low Phosphate)

Many low cost carbon products on the market place are washed in phosphoric acid as a final stage of their preparation and can release high levels of Phosphate into the water.

Rowa Carbon is an unusually high-performance activated carbon based on the finest quality hard coal and contains extremely low levels of Phosphate

Problems with algae are often caused by the release of phosphate from activated carbon with high POI (Phosphate Output Index) levels - often as high as 14.0, which inhibits lime synthesis in coralline algae, corals and other organisms that deposit lime.

Rowa Carbon is distinguished by its exceptionally low POI level of only 1.3 which is considerably below detection levels of phosphate test kits available to the hobbyist



Suitable for Marine or Freshwater