Geo's Reef Calcium Reactor (CR818)

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About This Product


  • All cell cast acrylic construction
  • thick clear lid to view proper O-ring seal
  • 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, 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

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