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Reef Octopus VARIOS CR140 5.5
Reef Octopus VARIOS CR140 5.5

Reef Octopus VARIOS CR140 5.5" DC Calcium Reactor

Reef Octopus


Shipping calculated at checkout

Perfect for tanks up to 250 Gallons

Dimensions - 12.2" L x 9.1" W x 23" H

  • Controllable DC Powered VarioS 2 Pump
  • Reverse Flow and CO2 Recirculation Design
  • Auto Fill Bubble Counter
  • Probe Holder
  • Easy to Remove Lid
  • Effluent Control Valve
  • 1/4" Push Connect Fittings
  • Internal or External Application
  • Neptune Apex Ready

Perfectly dial in your recirculation flow rate with the DC powered VarioS 2 CR140 Calcium Reactor. Calcium reactors are capable of maintaining a balanced ratio of calcium, alkalinity, magnesium, and other trace elements by dissolving aragonite medias with carbon dioxide gas which drives down the pH of the water to an acidic level dissolving the media releasing elements that your corals will use to grow. Reef Octopus Calcium Reactors are made with high-quality materials and can be one of the most cost effective calcium alkalinity solutions for larger reef tanks.


Recommended Tank Size:

High Ca/Alk Demand - up to 125 Gallons

Medium Ca/Alk Demand - up to 200 Gallons

Low Ca/Alk Demand - up to 250 Gallons



Body Size - 5.5"

Footprint - 12.2 x 9.1"

Height - 23"

Media Capacity - 1 gal (3.8L)

Inlet Tubing Size - 0.25"

Max Feed Rate - 150 GPH

Max Wattage - 25W @ 120VAC


What's Included?

1x CR140 Calcium Reactor

1x VarioS 2 DC Pump

1x Pump Power Supply

1x Pump Controller

2x Push Connect Ball Valves

2x  Suction Cups

1x Inline Check Valve