Calcium Reactors are a means to add highly soluble calcium chloride to your reef system without having to
continually purchase chemicals and measure and add them regularly. They can also be set up as an automated component requiring little intervention to operate.

Besides the calcium reactor you will need a CO2 cylinder and regulator to add CO2 to your reactor.

The way it works is you fill your reactor with aragonite filter media. It looks a white granule with different grades from oatmeal size to small pebbles. When CO2 is applied inside the calcium reactor through the bubble counter, the pH is lowered and the aragonite media begins to dissolve. The lower the pH, the faster the rate of dissolution and consequently, the more calcium is released. In addition, the alkalinity is raised which aids in stabilizing the pH in your tank. All good. Follow the instructions carefully as to not impact the pH of your tank adversely.

• Standard Flow Reactors
• A standard flow reactor pulls the water from the bottom of the reaction chamber and returns is to the top using the supplied Eheim pump.
• Reverse Flow Reactors
• In contrast, reverse flow calcium reactors pull water from the top and return the water to the bottom. The theory is that this reverse flow design allows for less channeling of water flow and better performance. Since all reactors should be serviced every quarter, we believe this performance difference is moot and see no real measurable performance advantage. Precision Marine offers both styles for those that prefer one over another.

Click below for the different models and their attributes.

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