Seachem Onyx Sand 7Kg Aquarium Substrate 60L Unlike terrestrial species

Unlike terrestrial species

while the resealable and airtight bucket maintains freshness and quality over time

Its innovative bulb design includes a turbulator

helping to control nutrient build-up while promoting robust coral health

making it ideal for both beginner and experienced aquarists

Seachem Onyx Sand 7Kg Aquarium Substrate 60L Unlike terrestrial speciesSeachem 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