Highly effective for phosphate control in aquariums. Attracts phosphate, nitrate, and nitrite ions to its surface and effectively eliminates them. It is useful in applications where tap water contains nitrates and/or phosphates, highly populated tanks, or if the aquarium contains items which leach phosphates. It is recommended to install Phos-X at aquarium startup. Phosphate removers are known to remove nutrients required for the growth of plants and algae.