SEACHEM ONYX GRAVEL 7KG

Important Note: For Seachem items, they will be collected and ordered from our supplier upon payment. In the event that the item is out of stock, we will promptly contact you and issue a refund for the unavailable item. Thank you for your understanding!

Premium natural substrate
Ideal for Tanganyikan Cichlids
Permanent – no replacement necessary
Freshwater and marine

Seachem Onyx is a natural substrate ideal for Cichlid aquarium. The carbonate-rich gravel can serve as a stand-alone substrate bed, or mixed with other sand, for marine and freshwater applications. Seachem Onyx is a permanent substrate for your aquarium. It does not deplete, hence no replacement is necessary.

Advantages
Gravel is one of the most important elements of an aquarium. The gravel serves as a home for beneficial bacteria. As bacterial colonise the substrate, natural bio filtration takes place within the substrate as the bacteria breaks down organic wastes, leftover food, and plant debris. This helps to keep the water clean and safe for your fish and plants.

Onyx 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.

Set-up
Although it is pre-washed, because Onyx is a natural product, it may become dusty in transit and require rinsing before use to remove any residual dust. When adding water to aquarium, fill slowly to avoid disturbing Onyx substrate bed. Place a bowl in the aquarium and add water directly to the bowl, allowing water to overflow softly on to the gravel bed. Initial cloudiness is normal. To remove cloudiness, use mechanical filtration (such as filter floss). Use Clarity to accelerate clearing.

Onyx Mineral Composition
Units=mg/kg, source: Plasma Emission Spectrometer, EPA Method 6010, Univ. of Georgia Chemical Analysis Lab

Al Ba Ca Co Cr Cu Fe K Mg Mn Na Ni V Zn
822 5 197,500 4 10 4 2,846 417 115,400 43 135 7 8 23