Caribsea Seaflor is a premium aragonite-based substrate specially formulated for reef and marine aquariums, designed to support a healthy and thriving saltwater environment. Sourced from natural marine environments, Caribsea Seaflor provides an ideal foundation for live sand beds, promoting the growth of beneficial bacteria and supporting essential biological filtration processes. Its fine, natural grain size closely replicates the appearance of a real ocean floor, creating a naturalistic and visually appealing aquarium substrate. Caribsea Seaflor actively buffers aquarium water, helping to stabilise pH and maintain optimal calcium and alkalinity levels critical for the health of corals, invertebrates, and other reef inhabitants. The substrate is free from harmful impurities and phosphates, making it a safe and reliable choice for both beginner and experienced reef aquarium hobbyists. Compatible with a wide range of marine aquarium setups, Caribsea Seaflor is a trusted and popular substrate choice among saltwater aquarium enthusiasts seeking a natural, functional, and aesthetically pleasing sand bed solution.