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Geo Calcium Reactors
Geo CR612x2 Dual Chamber Calcium Reactor
The world famous GEO Calcium Reactor!

Geo reactors are made in the USA in Ohio and fabricated using only the finest cast acrylic materials and quality fittings. Geo calcium and kalkwasser reactors like all GEO products are designed with the user in mind. The bottom up flow deisgn in the GEO calcium reactor captures free CO2 and draws it back into the pump. This means less gas in the reactor and less gas in the effluent. There is no need for a second single pass chamber with the GEO design.

The GEO calcium reactor line include all of the fittings and tube required for normal installation. The user will need to supply the media, CO2 equipment and feed pump of choice.

GEO CR612x2 Calcium Reactor

The CR612X2 DUAL chamber calcium reactor will hold 16 pounds of large grain media and is well suited for reef aquariums up to 300 gallons.

  • 6" diameter reaction chamber
  • 6” diameter secondary chamber
  • All cell cast acrylic construction
  • Key hole slot for lid removal
  • Full access to the reaction and secondary chambers
  • Micro ball valve effluent control
  • Sicce Syncra 1.5 pump, bolted to base plate
  • pH probe port in lid
  • pH probe adapter included
  • Auto fill bubble counter
  • 18.5” x 8.5” foot print, 16” overall height


Geo CR612x2




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