Seachem Onyx Sand FPP so you can add fish

so you can add fish to your aquarium (or add them back after a water change) immediately

For precise dosing

00006 mg Zinc (min) 0

and freshwater aquariums

Seachem Onyx Sand FPP so you can add fishOnyx Sand is a naturally dark gray 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. Premium natural sand for the planted aquarium