Description
Onyx‚ is a specially fractured natural substrate for the aquarium. Onyx‚ is suitable for any marine or freshwater environments and is ideally suited for Cichlid environments. Onyx is most effective when used alone as an integral substrate bed, but it may be mixed with other gravels or sands such as Onyx Sand. Onyx‚ is not chemically coated or treated but does have a slight buffering capacity.