The release of phosphate (PO4) from activated carbon with a high POI, often greater than 14, often leads to significant algae problems. In seawater aquariums, the synthesis of lime is also inhibited by calcareous red algae, stony corals, and other lime-depositing organisms.
ROWAcarbon+ …
highly active, therefore very low density
pH-neutral
low phosphate output (low POI = phosphate output index)
ROWAcarbon+ is therefore characterized by its outstandingly low phosphate output index (POI) of 1.3. The phosphate discharge is thus significantly below the detection limit of conventional measurement methods.