Automatic Water Treatment for Hot Tubs and Swim Spas

Our dosing system has been specially developed to meet the requirements of hot tubs and swim spas. It provides precise and fully automatic control of water treatment, reducing daily manual maintenance to a minimum.

Precise dosing is particularly important for the relatively small water volumes typically found in hot tubs and swim spas. The system’s compact design enables efficient monitoring and regulation of water quality while requiring very little installation space.

Product Overview

• Compact Built-In Dosing System: Easy operation with just one button and an exceptionally space-saving design – probably one of the smallest systems of its kind on the market.
• Flexible Dosing Strategy: Depending on the desired water treatment method, the system can dose pH and chlorine or alternatively pH and active oxygen.
• Automatic Control: The relevant water parameters are continuously monitored and dosing is automatically adjusted as required.

Scope of Delivery

• High-quality housing made of UV-resistant ABS/PMMA plastic
• Electronic control and regulation unit with OLED colour display
• pH probe
• Redox probe
• Two peristaltic dosing pumps
• Calibration solutions for pH and Redox
• Test strips for pH, free chlorine and carbonate hardness
• Installation materials and operating instructions
• Optional mounting base for the measuring unit

Optional Accessories:

• Liquid Duochlorin, 5 litres
• pH Minus, 3 litres
• Wi-Fi internet module for remote monitoring

Technical Specifications and Applications

• Measurement and Control Technology: Electronic control system with flow monitoring via proximity sensor
• Dimensions of the Dosing Controller: approx. 110 × 58 × 45 mm
• Power Supply: Input 230 V / 50 Hz, output 12 V DC
• Power Consumption: approx. 3 watts
• Applications: Ideal for hot tubs, swim spas and swimming pools with a water volume of up to approx. 100 m³
• Design: Based on DIN 19643 principles for controlled disinfection in combination with regulated pH control

Benefits at a Glance

Fully Automatic Water Treatment
The system continuously monitors the relevant water parameters and automatically adjusts dosing as required. This significantly reduces the need for daily manual maintenance and control.

Precise Dosing
Especially with smaller water volumes, even minor changes can have a significant impact on water quality. The automatic measurement and control technology enables precise, demand-based dosing.

Remote Monitoring via Wi-Fi
With the optional Wi-Fi module, important settings and the current water quality status can be conveniently accessed via smartphone or PC. Depending on the configuration, settings can also be adjusted remotely.

Compact Design
Thanks to its compact dimensions, the dosing controller can be easily integrated even where installation space is limited.

Over 25 Years of Experience – Made in Germany

For over 25 years, we have been developing and manufacturing water treatment systems for hot tubs, swim spas and swimming pools with water volumes of up to approx. 100 m³ – Made in Germany.

Our many years of experience are continuously incorporated into the development of reliable, compact and user-friendly solutions for automatic water treatment.

Why Controlled Water Treatment Is Essential

Various methods are available for water treatment, including electrolysis, active oxygen and chemical disinfectants. However, the choice of treatment method alone is not enough – reliable and controlled dosing is essential for maintaining consistently high water quality.

Chlorine is one of the most proven and effective methods of water disinfection. The pH level plays a crucial role in ensuring optimum disinfection performance. For this reason, our system automatically monitors and regulates the relevant water parameters and ensures demand-based dosing.

The result: reliably treated, hygienic water with significantly reduced maintenance requirements.