///GEO CR818 Calcium Reactor

GEO CR818 Calcium Reactor


The CR818 will hold 24 pounds of large grain media and is well suited for large SPS reef displays and commercial holding systems.



  • 8″ diameter reaction chamber
  • All cell cast acrylic construction
  • ½” thick lid, 3/8″ thick flange and base
  • Silicone o-ring
  • Key hole slot for lid removal
  • Full access to the reaction chamber (small diameter union tops do not provide this, making maintenance a chore)
  • Micro ball valve effluent control
  •  External pump Pan World PX 40, bolts to base plate
  • pH probe port in lid
  • pH probe adapter included
  • Auto fill bubble counter
  • 13 x 13 foot print, 24″ overall height


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