Carib Sea Aragonite Coral + 1 media bag.

CaribSea Florida Crushed Coral – Premium Marine Aquarium Substrate

CaribSea Florida Crushed Coral is the only crushed coral substrate that contains natural aragonite, delivering exceptional buffering capabilities and long-term pH stability for marine and hard water aquariums.

Key Features:

• Powerful pH Buffering
  Provides up to 25 times the buffering capacity of standard crushed coral, dolomite, or oyster shell—naturally maintains pH at 8.2+, ideal for marine and reef environments.

• Aragonite-Rich Composition
  Supports the release of calcium, strontium, and other essential trace elements, promoting a healthy aquatic environment.

• Biological Filtration Support
  Offers maximum surface area for beneficial bacteria, aiding in natural biological filtration.

• Versatile Use
  Compatible with traditional undergravel filter systems and reverse flow beds; perfect for fish-only marine tanks at approximately 1 pound per gallon.

• Grain Size: 2.0 – 5.5 mm
  Ideal for creating a natural look and maintaining stable water chemistry.