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Quality, design and affordability define the Octopus Calcium Reactor series. Available in 3 different models that feature reverse flow water current for maximum water and CO2 contact time with the coral media. All models come with PH probe holders to monitor Ph levels in the main reactor chamber and built in bubble counters to monitor CO2 drip rates. To help you meet the challenging task of maintaining alkalinity, calcium and trace elements , consider adding a Reef Octopus calcium reactor to your aquarium system.
How it works
A calcium reactor is essentially a chamber full of aragonite, which is the crushed skeleton of ancient hard corals. Aquarium water is pumped through this chamber along with pressurized carbon dioxide (CO2). The CO2 lowers the pH in the chamber to an acidic level which dissolves aragonite media into the aquarium water. In addition to dissolving the calcium, this process also dissolves nearly all the minerals and trace elements the coral used in order to grow.
Automated Calcium and Alkalinity supplementation - When set up properly and used correctly, a calcium reactor can maintain or increase calcium levels with little to no maintenance.
Rated for Aquariums up to 150 Gallons
Footprint: 9.5" x 7.5" | Body Diameter: 4" | Height: 20"
Recirculation Pump: OTP 1000
Feature
- Reverse flow and CO2 Recirculating Design
- Auto Fill Bubble Counter
- Probe Holder w/Plug*
- Easy to Remove Lid
- Precision Effluent Control Valve
- Solid Construction
- 1/4"quick connect fittings
- 1-year Manufacturer`s Pump Warranty * Does not include PH probe.
Calcium/Alkalinity Demand
- 150 Gallon – Light Demand | 125 Gallon – Medium Demand | 90 Gallon – Heavy Demand
Technical Specs
- Body Size: 4"
- Footprint: 9.5" x 7.5"
- Total Height: 20"
- Inlet Size: 1/4"
- Max Feed Rate: 150 GPH Note: Suggest a feed pressure slightly higher than a full flowing influent
Recirculation Pump Information
OTP 1000
Wattage: 13w
Warranty - 1 year manufacturer`s warranty on pump and 1 year on reactor body
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9 Questions
Displaying questions 1-9
Q
will this calcium reacto run my 210 gallon reef.
If it's not a goinf to run it cause its to small please be truthful Thanks
You are correct. This calcium reactor would not be able to keep up with your calcium demands in that size tank.
Calcium/Alkalinity Demand
- 150 Gallon – Light Demand | 125 Gallon – Medium Demand | 90 Gallon – Heavy Demand
Answered : Apr 25, 2018
By : Felicia
Q
Does this make the water more alkaline when i generate calcium?
My time is limited and don't have alot. of time to constantly check water to make sure a machine is not adding things I don't want i add calcium without a reactor i don't want to have a reactor if I have to watch it for other things besides calcium levels..
Great Question.
A calcium reactor increases both your calcium and alkalinity levels. If you add a product such as the Brightwell Aquatics NeoMag to the chamber, it will even add magnesium.
This was smaller than I thought it would be. I have an original cr-100 and it is much larger can hold 8# of media. This one maybe 4#. My old one however was just that old and needed to be replaced. The set up on this was much easier than any other reactor I have had and it works. This is on a h...Read More
This was smaller than I thought it would be. I have an original cr-100 and it is much larger can hold 8# of media. This one maybe 4#. My old one however was just that old and needed to be replaced. The set up on this was much easier than any other reactor I have had and it works. This is on a heavy stocked 90 gallon all sps tank and it keeps up. So all in all I think it was a good buy and a great price. I did not use the effluent valve that comes with it. I used the needle valve from my old setup way more precise than the one that comes with. Instructions on this are severely lacking Think IKEA diagram directions. So if you have never set up a calcium reactor before watch a video.Hide
Good calcium reactor. Smallish footprint. I'm running it on a medium stocked SPC 110G tank and do not have to use 2-part. Setup was WAY easier than my old Korallin reactor. Please note also these no longer come with the OTP pumps they come with aquatrance pumps. Overall would buy again and would...Read More
Good calcium reactor. Smallish footprint. I'm running it on a medium stocked SPC 110G tank and do not have to use 2-part. Setup was WAY easier than my old Korallin reactor. Please note also these no longer come with the OTP pumps they come with aquatrance pumps. Overall would buy again and would recommend. OtherHide
Most orders under $39 ship for only $5.99 using a mix of economy shipping methods including UPS Ground, USPS First Class, and/or SurePost. Your order will be delivered in up to 7 business days after it ships out.
free shipping for orders $39+
We ship 99% of the products we carry for free within the contiguous United States using a mix of economy methods including USPS First Class Mail, SurePost and UPS Ground. Your order will arrive in up to 7 business days. Just spend $39 or more!
free faster shipping for orders $250+
Over 90% of shoppers receive their orders within 1-2 business days. Upgrade from free economy shipping to faster shipping for only $5.99—or spend $250 and we'll upgrade you automatically!
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Same-day shipping is available Monday-Friday for most products—place your order by 10:30 am PST. Pre-ordered and back-ordered items do not qualify, nor do drop-shipped, live, or frozen shipments.
live plants, live foods, and frozen foods delivered to your door
We ship live plants, live foods, and frozen foods within the contiguous United States. Each of these categories is subject to its own $19.99 flat-rate shipping fee to cover the special packaging and/or expedited shipping costs required to ensure safe delivery. Orders with 12+ live plants ship free!
Return any new and unused item within 60 days for a full refund. Having difficulty with a product? Contact us to speak with an aquarium expert. If you need a replacement, fill out this form.
A small segment of the 180+ brands we carry require that customers contact them directly if/when problems arise. You can view the full list of those brands and get their contact info here.
We are unable to accept returns of Digital Aquatics, Neptune Systems, Vertex Aquaristik, Aqua Illumination (AI), EcoTech Marine, GHL, or Seneye products once the manufacturer's packaging seals have been broken.
Marine Depot is an authorized reseller for every product we carry. That means when you buy aquarium supplies from us, your products are not only backed by our own 60-day return policy, they also carry full factory warranties, where applicable. Some items have a 1-year warranty, others have limited lifetime warranties. Warranty coverage varies from manufacturer to manufacturer, so please read the product description of the item(s) you are considering thoroughly for details or contact us if you have warranty questions.
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