ONYX GRAVEL 7KG

Onyx is a natural substrate specially formulated for aquarium use. It is suitable for both freshwater and marine environments and is particularly well-suited for cichlid setups. Onyx is most effective when used alone as a complete substrate bed, but it can also be mixed with other gravels or sands such as Onyx Sand. It is not chemically coated or treated but does have a slight buffering capacity. To determine the number of bags needed for your aquarium, note that each 7 kg bag occupies approximately 7 liters in volume.