Bioscape Coral Bones Rubble 5kg 20–50 mm Natural Marine Media

Bioscape Coral Rubble 10 kg 20–50 mm Natural Marine Media

The Bioscape Coral Rubble 5 kg (20–50 mm) is a high-quality natural media designed to improve biological filtration, buffer pH, and maintain long-term water stability in marine, reef, and cichlid aquariums. Each rubble piece ranges between 20 mm and 50 mm, offering the perfect size for sump chambers, refugiums, and canister filter compartments.

Made from 100 % natural coral and aragonite, this rubble is naturally rich in calcium and carbonates that slowly dissolve over time, helping to maintain alkalinity, support coral skeleton growth, and stabilise water chemistry. Its coarse, irregular surface provides an excellent area for beneficial bacteria to colonise, enhancing nitrification and promoting clean, balanced water conditions.

The natural colour and texture of Bioscape Coral Rubble also make it ideal for decorative aquascaping, base rock layers, or as a substrate enhancer in marine and reef setups. It’s completely aquarium safe and will not cloud the water or release harmful compounds.

Key Features:

• 5 kg bag of coral rubble (20–50 mm pieces)

• 100 % natural and safe for all aquarium types

• Buffers pH and adds calcium to stabilise water

• Excellent biological filter media for marine systems

• Perfect for sumps, filters, and reef aquascaping

• Long-lasting, natural appearance for realistic displays

Ensure consistent water balance and biological performance with Bioscape Coral Rubble 5 kg (20–50 mm) — a natural, reliable media for healthy, thriving aquariums.