
Best selling Aquarium technology
Here's a ranking of the best products in this category. To give you a quick overview, we've also added some key information about the products.
1. Seachem Alerts Combo Pack 6 Month Ph/Ammonia - (159.0012)
Seachem Sensor Technology
Includes Ammonia Alert and pH Alert. Continuously monitors ammonia and pH levels in freshwater. No chemicals or testing procedures are required.
The Alert Combo Pack combines Ammonia Alert (1 card) and pH Alert (1 card). Ammonia Alert and pH Alert are nearly half the size of competing products. Measuring 1.5 x 2.5 cm, they are small, clear, and unobtrusive, ensuring they do not detract from the view of your aquarium. Simply place Ammonia Alert and pH Alert in a visible location anywhere in the aquarium or filter. It's that easy. No chemicals or testing procedures are required.

2. Aquael 109181 Aquarium water pump
The Aquael Circulator product line is designed for water circulation and aeration in both freshwater and saltwater aquariums. Its practical design allows for an adjustable flow direction of up to 120°. Despite its small size, the enclosed rotor chamber ensures quiet operation and high efficiency with low energy consumption. All Aquael Circulator models are equipped with special shock-absorbing suction cups. Larger models such as the Circulator 2000, 1000, and 1500 feature a ceramic rotor, making them even quieter and more durable. The Aquael Circulator can also be used as a pump for various types of biological and underground filters. For aquariums: up to 150L Capacity: 500L/h Power consumption: 4.4W Warranty: 2 years. Manufacturer: Aquael.

3. Fluval On the A402
Air compressors of the A-Series are designed to enhance water circulation and ensure the necessary oxygen supply for various types of aquariums. They provide powerful air delivery, combined with quiet operation and energy efficiency. Different models feature a varying number of air outlets with the ability to adjust the flow of each outlet. Larger, soft feet reduce vibrations.
Suitability: for aquariums up to 600 liters
Power consumption: 4W
The A402 model has two separately adjustable air outlets. Only the compressor, hose, and diffuser stone need to be purchased separately in the set.
Warranty: 2 years on electronics and wear-free parts.
Moving parts: rubber membrane.
Manufacturer: Custom Made in China by Hagen Germany.

4. Aquael 115515 Aquarium temperature controller
Ultra Heater is an unbreakable and stylish heater. The device is flat, only 9 mm thick and compact. Thanks to the practical double mounting system, the heater can be installed on any wall of the aquarium, even at the front. The Ultra Heater can be operated in any position, both horizontally and vertically. The operation of the heater is indicated by LEDs in the upper front part of the housing. The LEDs automatically turn on at the beginning of the heating cycle, allowing you to monitor the device. Extremely precise – calibrated in the Aquael laboratory to prevent fire hazards. Power: 150 W for aquariums: 90-150 liters. Manufacturer: Aquael, Poland. Warranty: 2 years.

5. Eheim 1046-790 120Volt US version Full ceramic bearing
The EHEIM universal pump 1046-790 is a versatile and reliable solution for water technology in aquariums. It offers an impressive flow rate of up to 300 liters per hour and is suitable for both freshwater and saltwater. This submersible pump is characterized by its robust construction and excellent continuous operation properties, making it ideal for use in breeding facilities, zoos, and other professional applications. The pump can be operated both in and out of water, which enhances its flexibility. An integrated pre-filter protects the impeller from dirt and ensures a long lifespan. With variable connection and mounting options, the pump can be easily installed and adjusted.
- Excellent continuous operation properties for professional use
- Integrated pre-filter protects the impeller and extends lifespan
- Hermetically sealed motor housing for maximum safety
- Variable mounting options with the included mounting plate
- Suitable for use in freshwater and saltwater.

6. JBL Aquaristik und Terraristik PH Sensor Set
The pH electrode must be purchased separately (not included in the set). It regulates the CO2 addition for optimal plant growth in the aquarium and the ideal pH level for aquarium fish. The temperature sensor, transformer, and pH electrode (not included) need to be connected and linked to the solenoid valve. The desired pH level can be entered manually or the automatic program can be used. The touch display allows for easy operation through the menu. For automatic regulation of CO2 addition, the carbonate hardness (KH) must be measured and entered. The program calculates the ideal pH level based on KH and the current pH level, adding CO2 until the desired pH is reached. It also displays the water temperature.
Included in the package: CO2 control unit with touch display, wall mount, power supply, temperature sensor with suction holder, connection cable to the solenoid valve, and cuvette holder for calibration liquids.

7. Juwel Aquarium Pump Eccoflow SeaSkim
The Eccoflow SeaSkim Pump from Juwel Aquarium is a powerful submersible pump specifically designed for use in aquariums. With a flow rate of 150 liters per hour, it is ideal for aquariums with a volume of up to 150 liters. This pump is designed for freshwater applications and provides a reliable solution to support skimmers, particularly the SeaSkim 3.0. Made in Italy, the Eccoflow SeaSkim Pump combines quality and functionality to ensure optimal water circulation and filtration in your aquarium. Its compact design allows for easy installation and integration into existing aquarium setups.
- Suitable for aquariums up to 150 liters
- Optimal support for Skimmer 3.0
- Made in Italy for high quality.

8. Aquael Circulator 2000
Circulator 2000

9. Eheim Clear UVC 11
The Clear UVC 11 UV clarifier from Eheim is a highly developed solution for improving the water quality in aquariums. This device utilises ultraviolet light to effectively kill harmful microorganisms, ensuring clear and healthy water. The clarifier is not only efficient but also energy-saving, making it a sustainable choice for aquarium enthusiasts. Equipped with a high-quality UVC lamp, the Clear UVC 11 offers a long service life and is suitable for continuous operation. The outer container is made of impact-resistant and UV-resistant all-weather plastic, which emphasises the durability and robustness of the device. These features make the Clear UVC 11 a reliable choice for aquarium maintenance.
- Energy-saving operation with only 14 watts of input power
- High-quality UVC lamp with a long service life
- Robust outer container made of impact-resistant, UV-resistant plastic.

10. Stiebel Eltron F7-LP filter cassette for filter box DN 160, FMK F7LP-1 for ventilation units
APPLICATION: Replacement filter cassettes for the FBF filter box made of unbreakable polyester fibres with partially progressive structure, thermally bonded, temperature-resistant up to 100 degrees, Z-folded in a sturdy frame made of moisture-resistant material
APPLICATION: Ventilation units
Stiebel FMK F7LP-1 filter cassette.

Stiebel Eltron F7-LP filter cassette for filter box DN 160, FMK F7LP-1 for ventilation units