Octo CalReact 3000D Dual Chamber Calcium Reactor
SKU: OCT-CALR3000D
MSRP: $ 1.027,94
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Available Through Authorized Retailer
- Dual-Chamber Engineering: Uses a secondary media tower to filter outgoing effluent, safely absorbing excess CO2 and boosting effluent pH before it enters your tank.
- Controllable DC Performance: Driven by a variable-speed VarioS 4 DC pump, providing energy-efficient operation, flexible flow controls, and near-silent execution.
- Reverse Flow Dynamics: Forces water upward from the base of the primary column to maximize water-to-media contact time and prevent substrate compaction.
- Recirculating CO2 Geometry: Built to capture and recycle pockets of undissolved gas from the top of the chamber, minimizing structural carbon dioxide waste.
- Integrated Probe Dock: Outfitted with a dedicated primary pH probe holder to seamlessly track and automate interior chamber acidity.
- Auto-Fill Bubble Counter: Features a clear visual bubble counter compartment to easily monitor, calculate, and audit manual gas injection rates.
Reef Octopus
Globally trusted for premium protein skimmers and pumps, engineered in-house for unmatched reef filtration performance.
Reef Octopus CalReact 3000D Dual Chamber DC Calcium Reactor
The Reef Octopus CalReact 3000D (SKU: OCT-CALR3000D, also recognized across legacy series as the SRO-CR3000D) is a high-capacity, dual-tower aragonite-dissolving filtration system engineered for large, densely stocked marine reef displays up to 580 gallons. In mature reef aquariums packed with small polyp stony (SPS) corals, mineral uptake can easily exhaust traditional liquid dosing regimens, spiking monthly maintenance costs and destabilizing water parameters. The CalReact 3000D automates mineral replenishment by continuously dissolving ancient crushed coral skeletons inside a highly controlled, acidic environment, adding bio-available calcium, carbonates, magnesium, and essential trace elements directly back into your water column.
The defining breakthrough of the CalReact 3000D is its Dual-Chamber Architecture. Traditional single-chamber reactors discharge an effluent with an extremely low, acidic pH (often between 6.5–6.7) due to the heavy injection of carbon dioxide (CO2). If left unbuffered, this acidic trickle can steadily depress your display tank's overall pH. The 3000D passes this raw acidic effluent through a secondary 7-inch media column before it leaves the system. This second stage naturally absorbs residual CO2 and dissolves extra aragonite, neutralizing the solution and boosting output pH to protect your delicate marine livestock.
Propelled by the high-torque, variable-speed VarioS 4 DC recirculation pump, this unit utilizes a specialized pinwheel impeller and a high-purity ceramic shaft. Operating on safe 24V current via a detached digital controller, the pump drives a reverse-flow fluid layout that lifts water upward from the base of the chamber. This steady pressure keeps heavy media beds in uniform suspension, completely avoiding the clumping, cementing, and anaerobic channeling that plagues flat-bottom reactors. Handcrafted from heavy-wall, optical-grade cast acrylic, the CalReact 3000D stands as the premier choice for pristine chemical stability in high-volume reef displays.
Key Features
pH Shielding Secondary Chamber: Degasses excess carbon dioxide, boosting effluent pH while squeezing additional mineral yield out of your aragonite media.
Controllable VarioS 4 DC Pump: Offers multiple precise speed profiles and standalone feed-pause delays. Features a 0–10V port for seamless integration with third-party automation networks like the Neptune Apex.
CO2 Gas Recirculation: Captures undissolved gas pockets at the primary neck assembly, re-injecting them into the water loop to conserve your bottle supply.
Precision Gate Valve Tuning: Includes an industrial-grade effluent micro-gate valve to lock in precise, drift-free daily drip rates.
Industrial Quick-Connects: Standard 1/4-inch push-connect interfaces allow for clean plumbing management across feed and effluent paths.
System Capacity Handling
Heavy Demand (Packed SPS Reef): 300 Gallons
Medium Demand (Mixed Reef): 450 Gallons
Light Demand (Soft Coral/LPS Display): 580 Gallons
What’s Included:
(1) CalReact 3000D Primary Chamber Assembly with pH Port
(1) Attached Secondary Degassing Effluent Tower
(1) VarioS 4 Controllable Recirculation DC Pump
(1) VarioS Detached Variable Speed Digital Controller
(1) Auto-Fill Visual Bubble Counter Assembly
(1) Precision Effluent Gate Valve Package
(1) 1/4 in Quick-Connect Push Fitting Set
Technical Specs:
Model / SKU: CalReact 3000D / OCT-CALR3000D
Chamber Body Diameter: Dual 7 in (2x 180mm)
Footprint: 15.75 in x 13.5 in
Total Height: 23 in
Total Media Volume Capacity: 11.5 Liters (3 Gallons)
Pump Max Power Draw: 40 Watts
Pump Operating Voltage: 24V DC
Maximum Raw Input Feed Rate: 150 GPH
Reef Octopus VarioS 4 variable speed pump
Max Wattage: 40w
External Control via 0-10V
WARRANTY
CoralVue, Inc. and Reef Octopus hereby guarantee this product to be free from defects in material and workmanship for a period of:
- Five (5) year warranty on pump body/housing
- Three (3) year warranty on Reef Octopus-branded controller
- One (1) year warranty on Power Supply, Impeller (and components), Rotor, Rear Bushing, and Gaskets
Warranty is activated on the date of purchase.
This Standard Limited Warranty applies and is limited as follows:
- To the product only as long as it remains in the possession of the original purchaser.
- To the product that has not been subject to accident, misuse or abuse.
- To the product that has not been modified, altered, defaced, or had repairs made or attempted by other than CoralVue, Inc.
- That CoralVue be immediately notified in writing within ten (10) days of first knowledge of defect by owner or his agent.
- That CoralVue, Inc. shall be given first opportunity to make any repairs, replacements or corrections to the defective construction within a reasonable period of time.
- Under no circumstances shall CoralVue and/or the Manufacturer be liable by virtue of this warranty or otherwise for damage to any person or property whatsoever for any special, indirect, secondary or consequential damages of any nature however arising out of the use or inability to use because of the product defect.
- Loosen the upper thumb-flange hardware and lift the sealing lids off both 7-inch cast acrylic cylinders.
- Rinse your preferred large-grain coarse aragonite reactor media thoroughly with RO/DI water to wash away fine dust, then distribute it evenly into both columns.
- Re-seat the heavy lids, making sure the structural silicone O-ring gaskets rest flush against the acrylic collars, and tighten down the thumbscrews in an alternating pattern.
- Insert your electronic pH controller probe into the designated primary chamber compression port and tighten the locking collar securely.
- Plumb your 1/4-inch feed supply water line (from a dedicated auxiliary pump or an active aquarium manifold tap) and your regulated CO2 feed line to their respective intake push-connect inputs.
- Fill the reactor assembly completely with tank water to push out trapped air pockets, power up your effluent supply line, select your preferred speed setting on the VarioS 4 controller, and connect to a GFCI outlet.
- Pro Tips:
- Coarse Media is Mandatory. Always use large-grain, coarse aragonite media (such as large coral bones or premium coarse chips) inside both towers of the CalReact 3000D. Fine, sandy media will quickly melt down into a dense, muddy paste inside the acidic 6.5 pH environment of the primary tower. This mud will clog the bottom distribution plates, choke water flow, and potentially seize or damage the VarioS impeller.
- First Tower Monitoring Only. When automating your CO2 gas injection with an electronic controller, ensure your pH probe is mounted exclusively inside the primary chamber port. The primary chamber must maintain an acidic target (typically 6.5 to 6.7) to melt the media. Do not attempt to read or control the gas based on the secondary chamber's pH, as its job is to actively raise those numbers back up before the effluent discharges into your sump.
- Prevent Effluent Line Clogging. Because the effluent fluid leaving the secondary chamber is saturated with calcium and carbonate ions, small mineral crusts (calcium scaling) can slowly build up inside the tiny 1/4-inch discharge line. Inspect your daily drip rate weekly. Every few months, clear out the lines by blowing a small volume of warm RO/DI water or a mild white vinegar solution through the effluent plumbing to dissolve hidden mineral blockages.