Onyx is a specifically fracted porous substrate for the aquarium. Onyx is appropriate for many sea plus freshwater conditions including reef plus planted aquariums. Onyx is best whenever utilized alone because an key substrate bed, yet it can be mixed with alternative gravels or sands. Gravel modifiers are not important. Onyx is not chemically coated or treated however does have a slight buffering capability.
<<Shop at Amazon>>
- Fracted porous substrate for the aquarium; Best for cichlid environments
- Suitable for any sea or freshwater environment plus is ideally suited for Cichlid environments
- Most powerful whenever chosen alone because an key substrate bed, however can be mixed with different gravels or sands
- Not chemically coated or treated however does have a slight buffering capacity
List Price: $ 36.97 Price: