Reef Octopus KS250 Nilson Kalkwasser Reactor

Reef Octopus KS250 Nilson Kalkwasser Reactor for Stable Calcium and Alkalinity Support

The Reef Octopus KS250 Nilson Kalkwasser Reactor delivers controlled kalk dosing for reef aquariums up to 320 gallons. This Reef Octopus Kalkwasser Reactor gently stirs calcium hydroxide to maintain a consistent, saturated solution. As evaporation-driven dosing becomes critical in larger systems, stability matters more than speed. Therefore, controlled mixing protects pH balance while supporting long-term coral growth.

Reef Octopus KS250 Nilson Kalkwasser Reactor System Specifications

• Rated for aquariums up to 320 gallons

• Footprint: 12.6 inches x 12.6 inches

• Body diameter: 10 inches

• Height: 26 inches

• Requires external feed pump and control timer

• 20-watt motor rated for approximately 1,500 operational hours

Since kalk dosing integrates closely with top-off systems, controlled intervals help extend motor lifespan.

KS250 Kalk Stirrer Designed for Clean, Predictable Dosing

Unlike traditional kalk reservoirs, the KS250 uses a high-torque, low RPM motor to stir rather than blast the mixture. Consequently, undissolved kalk remains settled at the bottom of the chamber. Meanwhile, clear saturated kalkwasser stays at the top for clean dosing.

The 20-watt motor operates quietly and avoids the turbulence common in powerhead-driven reactors. Because the system does not rely on internal pumps, maintenance remains straightforward.

FAQ About the KS250 Nilson Kalkwasser Reactor

Is the KS250 a stirrer or a pump-driven reactor?
It is a stirrer-based Nilsen reactor that gently mixes kalkwasser using a motor-driven paddle.

Does it require a feed pump?
Yes. An external feed pump and timer are required for operation.

Can it run continuously?
No. The motor should operate on controlled intervals to preserve longevity.

What tank size is it designed for?
It is rated for reef aquariums up to 320 gallons.