The ARID C30 Ca Feed Injection Assembly is an essential accessory for advanced reef aquarium setups featuring a calcium reactor. This compact manifold threads directly into the water inlet on the base of the ARID c30, allowing seamless integration with calcium reactors or peristaltic pumps. By directing water through a high and low pressure port system, it ensures optimal mixing of effluent from the calcium reactor with main aquarium water flow before it reaches the macroalgae in your system. The kit includes a manifold, drip counter, and four restriction discs to fine-tune performance.