Eliminate Daily Dosing & Stabilize Your Reef

Tired of constantly adjusting calcium and alkalinity?

The Reef Octopus CR140 Calcium Reactor provides a reliable, automated solution for maintaining stable water chemistry in reef aquariums especially in systems with high coral demand.

Designed for efficiency and ease of use, this reactor delivers consistent calcium and alkalinity levels without the need for daily manual dosing.

How It Works

The CR140 uses CO₂ to lower the pH inside the reactor chamber, allowing calcium reactor media to dissolve and release essential elements like calcium, alkalinity, and trace minerals back into your aquarium.

Result:

• Stable parameters
• Healthier coral growth
• Less daily maintenance

Why Choose a Calcium Reactor?

For reef hobbyists with growing or SPS dominant systems, maintaining stable parameters becomes critical.

A calcium reactor helps:

• Maintain consistent calcium and alkalinity levels
• Reduce fluctuations that stress corals
• Eliminate the need for constant manual dosing
• Support long term coral growth and health

Key Features

• Integrated VarioS DC pump for precise flow control
• Efficient recirculating design for maximum media contact
• Durable acrylic construction built to last
• Compact footprint for easy sump placement
• Quiet operation
• Designed for consistent, stable performance

Ideal For

• SPS and mixed reef aquariums
• Medium to large systems with high demand
• Hobbyists looking to automate dosing
• Reef keepers seeking long term stability

Technical Specifications

• Reaction Chamber Diameter: 5.5”
• High efficiency recirculating design
• Includes VarioS DC feed pump
• Suitable for a wide range of aquarium sizes

What You’ll Need (Sold Separately)

To operate this calcium reactor, you will also need:

• CO₂ tank
• CO₂ regulator with solenoid
• Calcium reactor media
• pH monitoring (recommended for best results)

Pro Tip

Pairing a calcium reactor with stable pH management (such as a CO₂ scrubber setup) can further enhance performance and coral growth.

🛡️ Warranty

Backed by a 1-Year Manufacturer Warranty