GEO 618 Calcium Reactor
Other products by GEO

Item #: CR-GEO-618
Our Price: $415.95
Availability: In Stock

GEO 618 Calcium Reactor.


All cell cast acrylic construction

* Clear lid to view proper O-ring seal
* Key hole slot for lid removal
* Micro ball valve effluent control
* Eheim 1048 pump, bolted to base plate
* pH probe port in lid
* pH probe adapter included
* Auto fill bubble counter
* 10 x 9 foot print, 24" overall height
* Holds 12 pounds of media, we recommend large grain schuran type
* For reef aquariums up to 350 gallons

The world famous GEO calcium reactor!

Our reactors are fabricated using only the finest cast acrylic materials and high quality fittings. Designed with the user in mind, we feel these are by far the easiest reactors on the market to install, operate and maintain. Bottom up flow of water 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 our design.

These reactors include all of the fittings and tube required for normal installation. The user will need to supply the media, CO2 equipment and feed pump.


Average Rating:
(based on 1 review)

Showing 1 Review:

by David
on 8/20/2011
OK Reactor for the Price
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.
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