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The KH keeper family

choose the best option for controlling aquarium parameters

The KH keeper family

choose the best option for controlling aquarium parameters

The latest product from Reef Factory that makes every marine aquarist’s life easier.
Products from our KH keeper line meet the highest standards for measuring the KH value in marine aquariums.

Minimalist design
Compact size

Measurement accuracy is 0.01 dKH


The KH keeper measures KH value by sampling water directly from the aquarium.
Readings may take place in daily cycles, every 1-12 hours.

Amazing precision and build simplicity

High-quality components and precise control algorithms allow the device to provide extremely accurate KH value readings (with 0.01 accuracy).
If the KH value drops too quickly between the measurements, the device will repeat the test. If the result is confirmed, the user will receive a notification. An aquarist can set a value for the measurement difference. Depending on the user’s preference, the test water can be returned to the aquarium or disposed of.

Amazing precision and build simplicity

High-quality components and precise control algorithms allow the device to provide extremely accurate KH value readings (with 0.01 accuracy).
If the KH value drops too quickly between the measurements, the device will repeat the test. If the result is confirmed, the user will receive a notification. An aquarist can set a value for the measurement difference. Depending on the user’s preference, the test water can be returned to the aquarium or disposed of.

Maintaining parameters at appropriate levels

The KH keeper measures aquarium water properties and adjusts the liquid dosing processes using a connected dosing pump. This helps keep the KH value at a set level. Soon, this feature will also work with calcium reactors and 3rd party pumps via our Power switcher.

Advanced controls and simplicity of use. Real user-friendly management and configuration.

Innovative visual indicator of the current KH value


We introduce our simple, interesting and new communication feature. The KH keeper has an external LED signaling system. The device uses colors to signal the KH value measured in the aquarium. If the KH value is in the safe range, the displayed color is green. Red means that the KH value is outside of the safe range. Blue means that the measurement is in progress.


Measurement
Safe range
Outside of the safe range
The device can be controlled easily and conveniently via a phone application, a browser on a laptop or our website.
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Historical measurements

Historical measurements are available in the range of 1 day to 1 year.

Actions - interoperability with other Reef Factory devices

Concentrated reagent 1 l and 2.5 l


Reagent mix ratio: 1 l of the reagent / 9 l of the RO water.
Prepared reagent test sample: 5-15ml (with KH value of 8, the prepared reagent consumption is about 8 ml).

1 l of the concentrated reagent is enough for 1,429 tests on average. The cost of a single test is about €0.035.

The Smart Reef system will notify the user when the reagent is running out.

What is the KH parameter?

This is one of the most important parameters in a marine aquarium.
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