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21.6 cu in (353 cu cm)
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Bachmann Iron Ore Fine Ballast (Bag) is a granular substrate made from finely processed iron ore. The product is supplied in a sealed bag and is intended for use as a decorative ballast in aquarium and pond settings, providing a natural, dark‑coloured base layer.
The manufacturer part number is WB70. Each bag contains 21.6 cubic inches (353 cubic centimetres) of material, offering a compact volume suitable for small to medium‑sized water features.
The ballast is chemically inert, non‑toxic and does not alter water chemistry. It is supplied as a ready‑to‑use product and requires no further processing before placement.