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Description

Seachem Onyx 7KGOnyx 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

LR and HR nitrate

including fishes and invertebrates

and other means of biological and chemical filtration

or until the contents are thoroughly mixed

dictating aquascaping to try and hide it and interrupting flow patterns inside the tank

but in a convenient single dosage formula that sure packs a punch for any marine aquarium

will not impact pH when used as directed

Professional

Multiple filtering as with an EHEIM external canister filter

Complex system of non-pathogenic aerobic and anaerobic microbes

Millions of live natural marine bacteria in depot balls for marine aquaria

if any one of these nutrients is not present in adequate supply