VarioS CR140 5.5-inch Calcium Reactor

The VarioS CR140 DC Calcium Reactor excels in maintaining alkalinity, calcium, and trace elements within a demanding reef system. Reef Octopus' VarioS Calcium Reactor series sets a high standard with quality, design, and controllability. This line comprises three different models, all featuring the new VarioS variable speed pump and reverse flow design, maximizing water and CO2 contact with the media. Each model comes with a built-in bubble counter and pH probe holder (probe and pH controller sold separately) for monitoring pH levels and CO2 drip rates. The reactor also has a precision effluent control valve, a solid construction, and quick-connect fittings. The included Auto Fill Bubble Counter ensures efficient CO2 recirculation, and the easily removable lid allows for easy maintenance. Additionally, Reef Octopus offers a 2-year warranty on the pump. Please note, a pH probe is required but not included. But how does a calcium reactor work? Essentially, it is a