Tropic Marin Elimi-Phos longlife is a long lasting, very high capacity special granular compound, which eliminates phosphates from saltwater and freshwater aquaria. Tropic Marin Elimi-Phos longlife consists of pure dry ferric oxide hydroxide, especially developed for tap water purification. Optimal granulation leads to a high flush rate. Due to ist dry nature, Tropic Marin Elimi-Phos longlife is easy to use, without the effect of discolouring the water.Tropic Marin Elimi-Phos longlife is particularly recommended to prevent unwanted algae growth. Phosphates become so strongly bonded to the Tropic Marin Elimi-Phos longlife granules that it will never be released, even after the full absorption capacity of the granules is reached. Tropic Marin Elimi-Phos longlife keeps ist phosphate removing properties over an especially long period of time.Tropic Marin Elimi-Phos longlife:+ special granules for the highly-efficient removal of phosphates in the aquarium+ pure, dry iron-hydroxide granules+