847-775-0640 Call us M-F 9-5:30 CST

GEO 618 Calcium Reactor

Product code: 926
CR-GEO-618

Availability: In Stock

Ships tomorrow if ordered in the next 17 hours and 44 minutes!

$469.00
Reward Points Policy Earn 23,450 AQUAPOINTS
OR
GEO 618 Calcium ReactorGEO 618 Calcium Reactor
GEO 618 Calcium Reactor GEO 618 Calcium Reactor GEO 618 Calcium Reactor GEO 618 Calcium Reactor GEO 618 Calcium Reactor

GEO 618 Calcium Reactor. 

The CR618 will hold 12 pounds of large grain media and is suitable for reef aquariums up to 300 gallons.

GEO 618 Calcium Reactor.

The CR618 will hold 12 pounds of large grain media and is suitable for reef aquariums up to 300 gallons.

  • 6″ diameter reaction chamber
  • All cell cast acrylic construction
  • 3/8″ thick flange, lid and base
  • Key hole slot for lid removal
  • Full access to the reaction chamber
  • NEW Precision Needle Valve for fine adjustments
  • Sicce Syncra 1.5, bolts to base plate
  • pH probe port in lid
  • pH probe adapter included
  • Auto fill bubble counter
  • 11 x 10 foot print, 22″ overall height
  • Comes with tubing harness shown in picture
  • Now comes with push to connect fittings.

Questions on GEO 618 Calcium Reactor

No questions asked yet

Ask Your Own Question








  1. Excellent - Best Calcium Reactor on the market Review by Mitch
    Product Rating:

    I have used this GEO Calcium Reactor for 4 years. I have been very pleased with the quality of it. The construction is excellent. Very positive purchase. (Posted on 7/9/2014)

  2. OK Reactor for the Price Review by David

    This reactor has a great following. The parts are all made from good materials and easy to setup. I like the key hole design for the lid which makes it easy to take off.

    The main issue I have with this reactor is that the Eheim pump that drives the reverse H2O flow action and moves the CO2 thru the media is way under powered for this to be rated for a 400 gallon system. The CA reactor I had previously was the Knop S IV which had a better channel design and next size up Eheim pump which delivered twice the amount of water flow, and this unit was able to barely keep up with a fully stocked SPS 200 gallon system. (Posted on 8/19/2011)


Write Your Own Review

You're reviewing: GEO 618 Calcium Reactor

How do you rate this product? *

Product Rating: 1 stars 2 stars 3 stars 4 stars 5 stars
469.00 In stock
  Loading...