OCTO Kalkwasser Reactor

Regular price $423.00

In Stock

  • FREE Delivery over $60


Features & Benefits

  • Raise or stabilize PH
  • Solid acrylic construction
  • High Torque-low RPM motor *
  • Quick connect fittings


Reef Octopus Kalk Stirrer (Nilsen Reactor) carries a high torque low RPM motor that effectively, silently and gently mixes your calcium hydroxide (Kalkwasser). This method is not only ideal but is also the safest way of dosing the freshest possible Kalkwasser to your reef system. The Reef Octopus Kalk Stirrer is designed to keep the undissolved particles at the bottom of the reactor chamber while always leaving the clear highly saturated Kalkwasser liquid at the top. Adding Kalk powder couldn’t be easier with just a few twists of the large thumb screws releasing the seal-tight lid for quick and easy Kalk refills.

No need for 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 Stirrer (Nilsen Reactor) which are extremely easy to use and salt-water safe, making them simply the most economical and best Kalk reactor out there.

*The Kalk Stirrer uses a motor that has a lifetime of about 1500 hours. Please don’t run unit continuously.

Technical Data

Product Wet/Dry Diameter Footprint Height Quick Connect Input and Output
mm inch mm inch mm inch mm inch
KS-100 Dry 100 3.9 140 140 5.5 5.5 700 27.6 6.30 1/4
KS-150 Dry 150 5.9 195 195 7.7 7.7 660 26.0 6.30 1/4
KS-250 Dry 250 9.9 320 320 12.6 12.6 660 26.0 10.00 0.39″


Product Calcium Hydroxide Tank Volume Feeding Pump Suggestion
gram L US Gal L/H Gph
KS-100 90-120 300-500 80-132 100-200 26-53
KS-150 120-150 500-800 132-211 100-200 26-53
KS-250 150-180 800-1200 211-317 200-300 53-80

Orders above $60 gets free delivery. Orders below $60 delivery is $15.

CBD / Sentosa / Jurong Island/ Orchard has an additional surcharge of $9.90.

Orders are processed within 3 working days.

OCTO Kalkwasser ReactorOCTO Kalkwasser ReactorOCTO Kalkwasser Reactor