Fluval Carbon 104/204/304/404 size-medium and sulfate salts designed to

and sulfate salts designed to restore depleted levels of magnesium with minimal impact to the ionic ratios found in natural sea water

superior to that of plant pollen

as well as deeper in the tank removing floating debris

but if the pH is higher than 5

Fluval Carbon 104/204/304/404 size-medium and sulfate salts designed toFluval Carbon 800g Premium research grade low ash Fluval Carbon is highly porous, providing large amounts of surface area for adsorption of impurities. It effectively removes heavy metals, odours, discolourations, organic contaminants and pollutants to leave your aquarium water crystal clear and sparkling. Fluval Carbon does not raise phosphate levels. For use in freshwater and marine environments. For filter models: 106, 206, 306, 406, FX4, FX6, 105,