Aquarium Systems Reef Crystals is a premium synthetic sea salt mix formulated specifically for reef aquariums. It contains elevated levels of calcium, trace elements, and vitamins compared to natural seawater, supporting the growth of corals, anemones, and other invertebrates. The mix also includes a detoxifier to neutralize harmful heavy metals, such as copper, commonly found in tap water. Reef Crystals is designed for easy mixing with dechlorinated tap or purified water, ensuring rapid dissolution and stable water parameters. It is compatible with all marine aquariums and is available in various sizes to suit different tank volumes.