Seachem Flourite Sand 3.5kg 7.7lb Small Bag provides a premium natural sand option for your planted aquarium. This specially fractured stable porous clay gravel is designed to enhance the aesthetics and functionality of planted aquaria, although it can be used in any freshwater aquarium environment. Flourite Sand is most effective when used alone as a primary substrate bed, but it can also be mixed with other gravels to create custom aquascapes. Unlike some substrates, Flourite Sand is not chemically coated or treated, ensuring that it will not alter the pH of the water. Additionally, Flourite Sand is good for the life of the aquarium and does not need to be replaced, offering long-lasting benefits for your aquatic habitat. Choose Seachem Flourite Sand for a beautiful, durable substrate solution that supports the health and vitality of your aquarium.