Rated 5.00 out of 5 based on 1 customer rating
(1 customer review)


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.

SKU: CR612X2 Category: Tags: , , , Product ID: 1716



  • 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 circulation, 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
  • Comes with tubing harness shown in picture

Additional information

Check Valve

None, Add High Grade Check Valve for 19.99

Precision Needle Valve

None, Add Precision Needle Valve for 25.99

1 review for GEO CR612X2 Calcium Reactor

  1. Rated 5 out of 5


    I’ve been running this for a month now on my 180 gallon reef. Its been working fine so far, giving me consistent parameter readings. Very well built. Support via email has been excellent too!

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