Loading... Please wait...

Kalkwasser Mixing Reactor KM-120 Small - IceCap

% Cash Back:
Free Shipping
Free Stuff:

Product Description

The IceCap Kalk Mixer is a dedicated reactor for dosing kalkwasser in a safe and controlled matter to supply equal additions of Calcium and Alkalinity to a Reef Aquarium. Kalkwasser dosing is considered one of the best all around methods to supplement calcium and alkalinity in a balanced solution. Pushing your top off water through a Kalk Reactor will create a super saturated slurry that has a high pH, helping increase your tanks pH while keeping your reefs most important elements (calcium and alkalinity) stable and balanced. There are many different dosing methods for kalkwasser, and by using a reactor, you can go longer in between maintenance while keeping a very stable, and consistent solution.

Available in 3 Sizes:

  • Small: Footprint: 5.7" x 5.7" | Body Diameter: 5" | Height: 25"
  • Medium: Footprint: 7" x 7" | Body Diameter: 6" | Height: 25"
  • Large: Footprint: 9" x 9" | Body Diameter: 8" | Height: 25"

Simply connect the IceCap Kalk Mixer to any freshwater reservoir with the use of an Auto Top Off unit or dosing pump(sold separately). The adjustable speed motor effectively mixes your calcium hydroxide (kalkwasser) with the use of a timer or controller(sold separately). This method is not only ideal but is also the safest way of dosing the freshest possible kalkwasser to your reef system. The IceCap Kalk mixer relies on gravity draining, which is much safer and reliable than common pressurized reactors available that are prone to clogs and leaks.

When adding kalkwasser to any aquarium, it is best to use a pump with a slow flow rate. Due to the high pH of the solution, it is best to add kalkwasser in small amounts, slowly, multiple times a day. Most ATO systems on the market will fit the flow rate needs of the reactor very nicely.  A timer for the motor is required to mix the solution throughout the day.

  • Adjustable Speed Magnetic Mixer
  • Solid PVC and Acrylic Construction
  • Compact Profile Design
  • Reactor Vessel Detaches from Base for Simple Maintenance
  • Push-fit Tubing Connectors
  • Convenient Easy to Refill Cap
  • Sealed Airtight Environment Preserves Freshness and Potency

What do I need to use the Kalk Mixer?

You will need a couple additional accessories with the IceCap Kalk Mixer one of which is a feed pump. In most cases, a peristaltic pump will be the best solution for the benefit that they are very accurate and also have anti-siphon characteristics. The drain barb uses 1/4" flexible RO tubing and will allow the reactor to drain into a high-flow area of your sump. A timer is required to run the mixer several times a day to ensure saturation. Last think it the Kalk itself.  


Once every two weeks, the kalkwasser solution in the reactor will need to be replenished, but only rinsed out once a month to make room for new kalkwasser. Since kalkwasser can help purify the freshwater that is fed into the reactor, the precipitate can form at the bottom that will be removed when the reactor is rinsed out. Rinsing the reactor only takes a few minutes and with the push connect fitting and easy access lid.  The addition of kalk powder couldn’t be easier by lifting off the refill cap and topping it off.

No need for pesky Powerheads

No need for pesky powerheads that randomly need to be cleaned or replace and no more risky dosing with large vats of lime water which take up valuable space. You will never have to worry about premixing or clogs again when using our new innovative and efficient Kalk Mixer which is compact and extremely easy to use, making them simply the most economical and best kalk reactor out there.

*The Kalk Mixer motor has a limited lifetime and not safe to mix continuously.  Please don’t run unit continuously.


Product Videos

Automated KALKWASSER Dosing - Using a Stirrer Reactor & Pump - Tank Automation 06:12
  • Automated KALK...
    What is Kalk, Kalkwasser aka "Limewater"? In this video we wa...

Customer Reviews


Why Choose to Shop with Us?

  • Pay with Amazon Pay - No need to type in billing, shipping addresses or credit card info, just log in to amazon and select the info you already have saved with amazon to purchase from us! Easy, simple and quick.
  • Fast & Free Shipping - No Minimum Purchase, Our Free Shipping option averages 2.3 days in transit.
  • Same Day Shipping - All Orders placed before 1 PM EST ship Same Day. Meaning your tracking will actually work the same day as your order.
  • Free Stuff - We offer tons of Free Samples, Shirts, Stickers and plenty more just for giving us your business!
  • 5% Cash Back Rewards - There are no Preferred Clubs or Groups to Join.
  • Free 2 Day Shipping - Free 2 Day Shipping on Products $35+ from select manufactures.
  • PayPal Financing - Want to buy a new tank without having to pay for all of it upfront? No Problem, use you PayPal Credit program to spread out the payments.
  • Free Returns - Returns of any Items (Both Brand New and USED) within 30 days are Always FREE!
  • Apple Pay - You can checkout with Apple Pay, submit your order with your thumbprint and we will never see your payment information. Awesome!
  • Military & Civil Service Discount - As a small token of our appreciation, we offer a Military & Civil Servant discount. A Bonus 5% Reward Points on 90% of what we carry. deeply appreciates all military men and women & first responders for their service.
  • Automatic Price Matching - Just click the Price Match button under Add to Cart. No need to email your price match.
  • Text Message 717.408.8337 Support - No one uses the phone anymore, just text us 717.408.8337. We will do our best to help!
  • Live Chat - We offer LIVE WEB CHAT Mon-Fri 9am to 4pm EST. Get instant access to our customer support & your questions answered.
  • Credit Card Security - We do not keep any Credit Card Numbers on File. Our checkout page is plugged directly into paypal credit services so we don't even know your card number when you order. 
  • Website Security HTTPS - Our entire site is HTTPS Secure, not just the checkout page. Your entire browsing session is encrypted and secure. We have an ESV level SSL Certificate which includes business identity authentication, strong 256-bit encryption, 2048-bit root, $1.5M USD warranty & a GeoTrust dynamic Secured Seal trust mark.

Have questions? Just ask - or Text Message us at 717.408.8337