Continuum Captiv Phos Fe

Continuum Reef•Basis Captiv Phos Fe is a premium ferric oxide filtration medium engineered to eliminate phosphates and silicates that fuel unwanted algae and diatom growth. This granular medium works safely across marine, reef, and freshwater systems without harming aquatic life or requiring algaecides. Simply rinse, place in a filter bag or fluidized bed reactor, and let water flow through—use approximately 1 gram per gallon of tank capacity. It targets free phosphates, dissolved organic phosphates, and silicates from tap water and food sources, bringing levels down to 0.04 ppm or less. For optimal performance, pair with a particulate prefilter like filter floss. An essential tool for maintaining pristine water quality and preventing nutrient-driven algae blooms in your aquarium.