Seachem Fluorite Black Sand Substrate, 7.7lb Go to amazon.com Related posts How to buy the best flourite black? Which is the best flourite substrate? FeaturePerformance Driven At Affordable PricesMade In The Use With Quality MaterialsField tested to ensure nothing but the best for your pet DescriptionFlourite Black Sand Planted Aquarium Gravel 3.5kg/7.7lbs NEW SMALLER SIZE