CaribSea Florida Crushed Coral

Powerful, natural pH buffering for marine tanks. CaribSea Florida Crushed Coral is the only crushed coral made with aragonite, giving it up to 25 times the buffering power of ordinary crushed coral, dolomite, or oyster shell. It eliminates chronic pH problems and provides a huge surface area for water-purifying bacteria. The coarse 2 to 5.5 mm grains are ideal for marine and reef tanks, and it is also a favorite for buffering African cichlid setups. Build your reef with salt mixes and corals.

Why Florida Crushed Coral

• The only crushed coral made with aragonite, up to 25x the buffering power of the rest
• Eliminates chronic pH problems and holds pH stable
• Coarse, high-surface-area grains support water-purifying bacteria
• Ideal for marine and reef tanks, and great for buffering African cichlid setups
• A time-tested, economical buffering substrate

How to Use

• Rinse before adding to reduce initial cloudiness
• Add about 1 to 2 inches as a display bed, or deeper for extra buffering
• Its coarse grain also suits under-gravel and high-flow setups
• Pour saltwater gently onto a plate to keep the bed in place

Choose Your Size

Specifications

Pair It With

• Salt mixes and live rock to build your reef
• Browse all corals and saltwater supplies

Frequently Asked Questions

Does it really help my pH?
Yes. Being aragonite, it buffers far more strongly than ordinary crushed coral, which helps hold your pH stable and resist drops.

Marine or freshwater?
It is made for marine and reef tanks, and it is a popular choice for buffering high-pH African cichlid setups too.

Do I need to rinse it?
Yes, a good rinse before adding reduces the initial cloudiness.

Which size do I need?
The 15 lb bag suits nano tanks, while the 40 lb bag is the best value for a standard tank.