CaribSea Seaflor Special Aragonite Sand for Marine Aquariums – 40lb

CaribSea Seaflor Special Sand is a premium aragonite substrate designed to enhance aquarium appearance while supporting filtration and long-term water stability. Part of the trusted CaribSea substrate range, this clean white sand creates a natural reef look while contributing to healthier aquarium conditions.

Ideal for marine and reef aquariums, Seaflor Special Sand naturally buffers water to a stable pH of approximately 8.2, reducing stress on fish and corals. It is also suitable for aquariums housing African Rift Lake cichlids, which require higher pH levels to thrive.

This aragonite-based substrate contains calcium, carbonate, and essential trace elements that are gradually released into the water. These nutrients help replenish elements that become depleted in busy aquariums, while the grain structure supports beneficial bacteria that aid in biological filtration and waste reduction.

Key Features

• Premium aragonite sand substrate
• Grain size: 1.25mm – 1.95mm
• Enhances aquarium appearance with bright white sand
• Buffers pH to approximately 8.2
• Supports biological filtration
• Helps control ammonia, nitrite, and waste by-products
• Contains calcium, carbonate, and trace elements
• Suitable for marine, reef, and high pH freshwater aquariums
• Supplied in a 40lb (18kg) bag

CaribSea Seaflor Special Sand 40lb is a high-quality aragonite substrate that improves filtration, stabilizes pH, and replenishes essential nutrients. Its natural buffering ability and clean appearance make it an excellent choice for larger marine, reef, and high-pH freshwater aquariums.