Bioscape Natural Coral Rubble 5kg 20–50mm Marine Aquarium Rock

Bioscape Coral Rubble 5kg (20–50mm) is natural marine coral rock designed for use in reef aquariums, marine sump systems and biological filtration setups. Its porous structure and irregular shapes provide excellent surface area for beneficial bacteria, helping support biological filtration and stable aquarium water quality.

This coral rubble is commonly used in sump chambers, refugiums and filter media compartments where additional biological filtration is beneficial. The natural calcium carbonate composition makes it suitable for marine environments and complements reef aquariums and marine fish systems.

With pieces ranging from 20mm to 50mm, the rubble size is ideal for stacking within filtration systems or creating natural aquascaping features within marine aquariums. It can also be used to help stabilise live rock structures or provide hiding spaces for small marine fish and invertebrates.

Supplied in a convenient 5kg bag, Bioscape Coral Rubble is a versatile option for marine aquarists looking to improve filtration capacity and create a natural reef-style environment.

Key Features

• Natural marine coral rubble

• Convenient 5kg bag

• Piece size 20mm – 50mm

• Excellent surface area for beneficial bacteria growth

• Ideal for marine sump filtration and refugiums

• Suitable for reef aquariums and marine fish systems

• Can be used for aquascaping or stabilising live rock

• Natural calcium carbonate coral rock