Support stable water chemistry and superior biological filtration with CaribSea Aragonite Crushed Coral. This premium marine aquarium substrate contains natural aragonite, delivering significantly stronger buffering capacity than standard crushed coral, dolomite, or oyster shell. It helps maintain proper pH levels and reduces the risk of chronic acidity problems in saltwater systems.

The porous structure provides extensive surface area for beneficial bacteria, improving biological filtration and supporting a higher bioload. With long-lasting performance, this substrate is designed for extended use without frequent replacement.

Versatile Reef System Use

• Suitable for marine and reef aquariums

• Can be used in calcium reactors and plenum systems

• Releases calcium, carbonate buffer, and trace elements such as strontium

Grain Size: Approximately 2–5 mm (1/8–¼”)

Key Benefits:

• Natural aragonite-based crushed coral

• Helps stabilise pH and alkalinity

• Maximizes surface area for water-purifying bacteria

• Supports increased biological capacity in the aquarium

• Provides essential minerals for reef environments

Create a stable foundation for your marine aquarium with CaribSea Aragonite Crushed Coral, the smart choice for healthy water chemistry and thriving aquatic life.