IceCap Kalk Mixer Reactor, Large
SKU: IC-KM-200
MSRP: $ 473,54
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Available Through Authorized Retailer
- Integrated Magnetic Stirrer Bar: Features an adjustable-speed external magnetic motor that spins an internal stir bar, completely replacing unreliable, clog-prone submersible powerheads.
- Large-Capacity 3-Gallon Vessel: Massive 8-inch diameter chamber handles large internal volume reservoirs, matching the filtration demands of aquariums up to 300+ gallons.
- Sealed Airtight Environment: Prevents surrounding ambient carbon dioxide (CO2) from reacting with the liquid, fully preserving the solution's structural potency and chemical strength.
- Mess-Free Quick-Fill Cap: Top-loading quick-access fill port allows for clean, fast kalkwasser powder addition without requiring full reactor teardowns.
- Reliable Gravity Drain Flow Path: Relies on a non-pressurized gravity exit barb to push saturated effluent into your sump, avoiding the pressure cracks and tube ruptures of inline designs.
- Quick-Disconnect Maintenance Frame: The primary clear acrylic column detaches from the solid PVC base plate with ease, allowing for painless monthly rinse routines.
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IceCap Kalk Mixing Reactor Large 8" — KM-200 (IC-KM-200)
The IceCap Kalk Mixing Reactor Large (SKU: IC-KM-200) is an authentic, heavy-duty chemical water treatment system distributed by CoralVue to streamline and secure the addition of calcium hydroxide (Kalkwasser) into large-scale marine reef aquariums up to 300 gallons and beyond. Traditional kalkwasser dosing requires hobbyists to manually mix white powder into large top-off reservoirs or reservoirs. This not only consumes substantial space under the cabinet but exposes the solution to room air, where carbon dioxide immediately reacts with the lime water to form a useless calcium carbonate precipitate crust, rapidly reducing its potency. The IceCap KM-200 completely eliminates manual daily mixing by isolating the calcium hydroxide within an airtight, compact structural tower.
At the operational core of the Large Kalk Mixer is its advanced Adjustable Speed Magnetic Stirrer Motor. Standard kalk stirrers use traditional internal water pumps to mix the slurry, which quickly wear down or freeze up as calcium scales form along the impellers. The KM-200 utilizes a completely isolated external motor that drives a heavy-duty internal magnetic stir bar coated in reef-safe polymer. Hooked up to an external timer or controller, the mixer automatically turns on a few times a day to gently agitate the powder bed at the base, creating a highly concentrated, super-saturated fluid layout. When your fresh Auto Top-Off (ATO) pump pushes fresh water into the reactor base, it forces the clear, rich kalk solution out of the top gravity port and down into your sump, providing balanced calcium and alkalinity while maintaining a stable pH level of 8.3 inside your display.
Key Features
Aggressive pH and Nutrient Support: Delivers a high-pH solution that binds free phosphates while neutralising organic CO2 inside the aquarium loop to maximize coral growth rates.
Safe, Non-Pressurized Discharging: Employs a zero-pressure gravity flow design that limits structural strain, eliminating the messy floor leaks common with pressurized filters.
Heavy-Wall Acrylic Engineering: Constructed from thick, durable clear cell-cast acrylic panels anchored securely onto a heavy, high-gloss solid PVC support plate.
(Note: This retail package includes (1) Large Kalk Mixing Reactor vessel, (1) integrated magnetic drive motor, (1) internal magnetic stir bar, (1) low-voltage power supply, and push-fit plumbing adapters. Kalkwasser powder, feed dosing pumps, and automated timers are sold under separate product categories).
IceCap Kalk Mixing Reactor Sizing Matrix
| Reactor Classification | SKU Reference | Maximum Sizing Guideline | Reaction Column Diameter | Footprint Scale | Total Structural Height |
|---|---|---|---|---|---|
| IceCap Kalk Mixer Small | IC-KM-120 | Up to 100 Gallons | 5.0 Inches | 5.7" x 5.7" | 25.0 Inches |
| IceCap Kalk Mixer Medium | IC-KM-150 | Up to 200 Gallons | 6.0 Inches | 7.0" x 7.0" | 25.0 Inches |
| IceCap Kalk Mixer Large | IC-KM-200 | Up to 300+ Gallons | 8.0 Inches | 9.0" x 9.0" | 25.0 Inches |
What’s Included:
(1) IceCap KM-200 Large Clear Acrylic Reactor Body Vessel
(1) Solid PVC Base Plate Frame with Integrated Motor Track
(1) Adjustable-Speed External Magnetic Stirring Motor Assembly
(1) Heavy-Duty Internal Magnetic Stir Bar with Friction Bands
(1) Low-Voltage Direct Current Stirrer Power Supply Adapter
(2) Quick-Connect Push-Fit Tubing Adapters (1/4-Inch Input / Output)
Technical Specs:
Official Manufacturing Title: IceCap Kalk Mixing Reactor Large
SKU / Factory Part Identifier: IC-KM-200
Internal Fluid Holding Capacity: ~3.0 Gallons (11.3 Liters)
Total Base Footprint Scale: 9.0" x 9.0"
Reaction Tower Body Diameter: 8.0 Inches
Total Operational Height: 25.0 Inches
Input Hookup Size Requirement: 1/4-Inch RO Tubing Line (1/4in)
Output Gravity Drain Barb Size: 1/4-Inch RO Tubing Line
Stirrer Motor Voltage Profile: Low-Voltage DC Configuration
- Unbox the reactor components. Inspect the clear acrylic cylinder and check that the two rubber friction bands are securely in place on your internal magnetic stir bar. Warning: Never operate the reactor without checking these friction bands, as a bare magnet can score the interior acrylic.
- Place the reactor column vertically inside a flat, dry cabinet section next to your sump. Note: Because this is a gravity-draining vessel, the upper output barb must sit physically higher than the top rim of your sump's receive section.
- Route the freshwater line from your Auto Top-Off (ATO) or standalone dosing pump into the lower 1/4-inch push-fit input port at the base of the reactor tower.
- Connect a line of 1/4-inch RO tubing to the upper gravity exit barb, and position the opposite end over a high-flow water area of your filtration sump (such as near a skimmer pump intake).
- Unscrew the quick-access top fill cap. Pour in 1 to 2 cups of premium calcium hydroxide powder, then secure the cap clockwise until the airtight rubber gasket forms a seal.
- Connect the magnetic drive motor to a programmable timer or aquarium controller. Configure the timer to activate the motor for 5 to 10 minutes, every 4 to 6 hours. Crucial: The mixer motor is not built for continuous runtime. Running the motor 24/7 will overheat the coils and void your factory warranty.
- Pro Tips:
- Utilize a Slow-Flow Peristaltic Dosing Pump to Feed the Water Inlet Line. Kalkwasser carries an incredibly high native pH value of approximately 12.4. If your freshwater feeding system pushes water through the reactor too rapidly, it will flood your sump with a concentrated alkaline spike, causing your tank's calcium carbonate to instantly precipitate out of solution (often turning the display water a cloudy white). Feeding the reactor with a slow, controlled peristaltic dosing pump or a highly throttled, micro-ATO pump allows the concentrated fluid to drip in smoothly, keeping water chemistry stable.
- Never Allow Your Freshwater Dosing Tube to Sit Fully Submerged in Sump Water. The gravity drain line coming out of the upper port of the KM-200 must hang freely in the air, dripping down into your sump water line without making direct contact with it. If you submerge the end of the exit tube below the sump's waterline, high-pH kalk solution will mix with high-salinity marine water inside the tip of the pipe. This triggers immediate calcium scaling that will clog the 1/4-inch RO line within weeks, leading to backup overflows under your cabinet.
- Perform a Quick Internal Freshwater Flush Once Per Month. As fresh water processes through the calcium hydroxide bed, impurities and insoluble compounds will collect at the absolute bottom of the chamber as a gray, muddy precipitate sludge. To keep your solution purity high, let the powder dissolve completely over a 4-week window. Once a month, isolate the push-fit lines, carry the clear cylinder column to a sink, unscrew the base screws, and rinse the internal tracking clean with fresh water before restocking.