Seachem Reef Reactor MD 4L is a premium, high-purity aragonite source specifically designed for use in calcium reactors within reef aquaria. This specialized filter media slowly dissolves with the addition of CO2, effectively supplying a comprehensive array of vital elements to foster optimal ionic balance, robust coral growth, and vibrant coloration in your reef tank. It delivers essential calcium, magnesium, strontium, potassium, and carbonates, among other crucial elements.

With a precise grain size of approximately 0.5-1 cm, Reef Reactor MD is formulated for efficient dissolution in calcium reactors. It excels at significantly increasing and stabilizing alkalinity, which in turn supports a stable pH and encourages the rapid formation of coral skeletal material. This product provides high levels of both calcium and magnesium, offering a superior means of balanced supplementation. Notably, it boasts the highest level of soluble potassium compared to all competing brands, while exhibiting the lowest levels of both aluminum and phosphorus, ensuring purity and safety for your delicate reef inhabitants.

This product is an excellent choice for dedicated reef aquarists who utilize calcium reactors and are seeking a reliable, high-quality media for balanced elemental supplementation. It is ideal for hobbyists focused on achieving rapid growth and successful propagation of corals and other calcareous animals. By consistently delivering critical elements and stabilizing key water parameters, Seachem Reef Reactor MD 4L helps to cultivate a thriving, healthy, and visually stunning reef environment.