The N Series ARID C30 Ca Feed Injection Assembly is a versatile and essential component for reef aquarium enthusiasts utilizing calcium reactors or peristaltic pumps. This compact manifold, designed to thread directly into the water inlet on the base of the ARID n24 and inline with tubing on the n18, facilitates seamless integration between your calcium reactor and the ARID system. By separating high and low pressure ports via a user preset valve, it ensures that effluent from the calcium reactor mixes efficiently with the main water flow before entering the reef system, enhancing nutrient uptake and dissolved oxygen production. This innovative assembly includes a drip counter, an adapter for n18 models, and four restriction discs to optimize performance.