Seachem Onyx Gravel Size:7kg Perfect to pair with the

Perfect to pair with the matching lead

Essential for damaged

Ideal for medium-sized to large dogs

5 kg 1½ 1¾

Dimensions: 60 cm x 4

Seachem Onyx Gravel Size:7kg Perfect to pair with theOnyx is a specially fracted 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. Although it is pre washed, because Onyx is a natural product, it