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Facilitates seamless hose connectivity
Compatible with a wide range of Eheim accessories for enhanced functionality
which makes them easier to fit into the ceramic media in the biOrb
making it ideal for both beginner and experienced aquarists
helping to control nutrient build-up while promoting robust coral health
Seachem Onyx Sand 7Kg Aquarium Substrate 60L Facilitates seamless hose connectivitySeachem Onyx Sand is a naturally dark grey sand that perfectly complements and enhances the appearance of any aquarium. It provides not only iron and other minerals but supports optimal KH levels for freshwater planted aquariums. Being carbonate rich, Onyx Sand provides an advantage to any plants able to utilize bicarbonates. Although ideally suited to planted aquaria, it may be used in any aquarium environment. Seachem Onyx Sand is most effective