The Reef Octopus KS100 Kalk Reactor is a high-torque, low RPM motorized device designed to gently mix calcium hydroxide (kalkwasser) in your saltwater aquarium. This innovative reactor ensures that undissolved particles remain at the bottom of the chamber while leaving clear and highly saturated kalkwasser liquid on top for optimal reef health. It eliminates the need for powerheads, reducing maintenance requirements and ensuring a safe, continuous supply of calcium-rich water without clogs or messy pre-mixing.