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Controllers and measuring instruments for precise aquarium control

Aquarium controllers and meters are an indispensable part of modern aquarium keeping. They allow for precise monitoring and control of key parameters such as pH, temperature and CO2 levels. Using reliable aquarium controllers and meters ensures a stable and safe environment for fish and plants.

In the aquarium controllers and meters category, you will find solutions for both beginners and advanced aquarists. Precise control reduces the risk of sudden changes and supports the long-term health of the aquarium ecosystem.

Why is it important to use products from this category?

Aquarium controllers and meters provide constant monitoring of water parameters. This is especially important for sensitive fish species and planted aquariums, where even small deviations can lead to stress.

By using aquarium controllers and meters, a better balance is achieved, fewer algae problems and more efficient operation of CO2 and heating systems. They give security and peace of mind to every aquarist.

Types of controllers and measuring instruments

  • pH controllers for aquarium
    Digital devices for constant measurement and automatic control of the pH value. Often used in combination with CO2 systems in planted aquariums.

  • pH meters and testers
    Portable or stationary measuring instruments for quick checking of the pH of the water. Suitable for both beginners and advanced aquarists.

  • CO2 controllers and monitors
    Devices that monitor the levels of carbon dioxide in the aquarium and can control the supply of CO2 automatically.

  • Temperature controllers
    Controllers that automatically control heaters or coolers, maintaining a set temperature in the aquarium.

  • Multifunction controllers
    Combined devices that measure and control several parameters simultaneously - pH, temperature and CO2. Suitable for high-end aquarium systems.

  • ORP (redox) measuring instruments
    Devices for measuring the oxidation-reduction potential of water, used mainly in marine and professional aquariums.

  • EC / TDS meters
    Used to measure the total amount of dissolved substances in water. Useful when using osmosis water and mineralization.


How to choose a suitable product


When choosing aquarium controllers and meters, it is important to consider the type of aquarium and its inhabitants. For planted aquariums, pH and CO2 controllers are recommended, and for all aquariums - a reliable thermometer.

Choose aquarium meters with high accuracy and easy calibration. Quality controllers provide long-term stability and minimal need for manual intervention.

FAQ - Aquarium controllers and meters

Are meters necessary for beginners?

Yes, even for novice aquarists, aquarium meters help to avoid errors and sudden changes in water parameters.

How often should the devices be calibrated?

Most aquarium controllers and meters are calibrated every 1–3 months, calibrating solutions and buffers, depending on the model and frequency of use.

Can controllers control other devices?

Yes, some aquarium controllers can automatically control CO2 systems, heaters, and other components.


Water tests – additional parameter control
CO2 systems for aquariums – for complete carbon dioxide control

A universal smart Bluetooth plug, suitable for aquariums and various household devices. It allows easy control and monitoring via a mobile app, integrating intelligent features into your daily routine.Advantages of the Smart Bluetooth PlugConnectivity: Bluetooth (enables wireless control from a smar..
89.50 лв.(45.76€)
TAXNELE thermostat for precise adjustment and maintenance of aquarium temperature. Suitable for heating and cooling.Technical parameters:Operating voltage range: 100 ~ 240V AC 50 / 60HzMaximum current: 10 (2) ATemperature control range: - 20 ℃ ~ + 120 ℃ Temperature control accuracy: ± 1%Temperature ..
28.00 лв.(14.32€)
CO2 Indicator ZRDR is compact in size and visible from any angle. The need to monitor CO2 concentration is always a challenge for novice aquarists with planted aquariums. CO2 concentration is affected by both carbon adjustment through the bubble counter and the diffuser and filter power, the direct..
14.50 лв.(7.41€)
Replacement reagent refill 15 ml for CO2 Indicator. If you want your CO2 Indicator to display correct values ​​in the aquarium, the reagent should be replaced once a month. Adding 2-3 ml when replacing the CO2 reagent bottle will be enough for about 6 months...
6.70 лв.(3.43€)
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