Product: Onyx Sand, 7 kg / 15.4 lbs
Brand: Seachem
Color: black
Fracted Porous substrate for the aquarium
Specially fracted Porous substrate for the aquarium; Suitable for most marine and freshwater environments including reef and planted aquariums
Most effective when used alone as an integral substrate bed but may be mixed with other gravels or Sands
Not chemically coated or treated but does have a slight buffering capacity

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