Check the listing for details. Chemi-Pure Blue 11 oz All in One Filter Media for Reef and Marine Aquariums. Color: Multi-colored, Condition: New, Made in US. Listed at 27.93 USD. Chemi-pure Blue is the ultimate all-in-one marine aquarium filtration media, in an easy to use nylon bag, that offers superior filtration and fantastic results in even the most advanced marine reef aquarium systems. Chemi-pure Blue combines the highest grade of low dust pelletized carbon with premium ion exchange resins to produce a synergistic formula for the health and wellbeing of your aquarium inhabitants. Chemi-pure Blue's proprietary formula significantly reduces organic compounds, odors, phenols, toxins, medications, dissolved metals, phosphates and silicates. Chemi-pure Blue's high-capacity pelletized activated carbon has very low ash content and rinses clear quickly, thus reducing the potential of HLLE within your aquarium.