No need to change equipment with every season.
Cooling when it is hot, heating when it is cold
Manage aquarium temperature year-round with one product instead of preparing a separate chiller and heater.
Cooling & heating in oneAll year round
The ElecQUA Thermostat maintains water temperature with 0.1°C precision.
Year-round temperature control, all in one
The ElecQUA Thermostat is a hang-on unit that automatically switches between cooling and heating based on the actual water temperature.
- Automatically switches between cooling and heating based on the actual water temperature
- Installs directly on aquarium glass up to 10 mm (0.39 in) thick
- Check the water temperature and operating status and change settings in the app
CORE BENEFITS
Optimized for aquarium temperature control
One product simplifies the process of changing equipment with the seasons, connecting pumps and hoses, and checking the operating status at the aquarium.
Operates as needed based on the actual water temperature.
Automatically switches between cooling and heating
Rather than switching equipment at set times, it operates automatically according to the measured water temperature and configured conditions.
Installs directly on the aquarium without a pump or hoses.
Direct heat exchange
Because no separate external circulation pump or connecting hoses are required, both the installation and the area around the aquarium can remain simple.
Check the water temperature remotely.
Internet of Things
After registering the product, users can check the current water temperature and operating status and change settings in the app. If the internet connection is lost, the product continues controlling the water temperature based on the saved settings.
DIRECT HEAT EXCHANGE
Unlike external circulation systems, it transfers thermal energy directly.
The ElecQUA Thermostat cools and heats through direct contact with the aquarium water. With no circulation pump or hoses required, installation and maintenance are simpler, and there is no heat loss from external circulation.
EXTERNAL CIRCULATION
External-circulation cooling setup
A system that connects a chiller, pump, and hoses to circulate aquarium water outside the aquarium.
Required accessories: circulation pump and hoses
Heat generated by the circulation pump
Heat loss during water circulation
Reduced heat-exchange efficiency from deposits
Difficulty cleaning inside the heat exchanger
DIRECT HEAT EXCHANGE
ElecQUA direct heat-exchange technology
A ceramic heat exchanger exchanges heat directly with the aquarium water, managing both cooling and heating in one product.
Direct heat-exchange technology integrating cooling and heating
Installs directly on aquarium glass
Designed without a pump or connecting hoses
Ceramic heat exchanger with a 0% corrosion rate
Easy maintenance
※ The image is an example comparing the energy-transfer structures of a conventional circulation chiller and the ElecQUA Thermostat.
PRODUCT ADVANTAGES
A new standard for aquarium temperature controlSmart IoT Thermostat seize [siːz]
From integrated cooling and heating to direct heat exchange, app control, and maintenance, explore the advantages unique to the ElecQUA Thermostat.
- COOLING
- STABLE
- HEATING
- SENSOR ERR
- FAN ERR
- REBOOT ERROR
01 / DIRECT HEAT EXCHANGE
Ceramic heat exchanger with a 0% corrosion rateDirect heat exchange without a pump or hoses
02 / SMART CONTROL
Internet of ThingsCheck the water temperature and operating status remotely
03 / SIMPLE INSTALLATION
Direct installation without complex connectionsCompatible with aquarium glass up to 10 mm (0.39 in) thick
04 / EASY MAINTENANCE
Easy maintenanceRinse the lower section with water after removing the controller
05 / REPLACEABLE SENSOR
Replace the water-temperature sensor when neededReplaceable water-temperature sensor
06 / 3-STAGE OPERATION
Silent · Normal · TurboThree operating modes for different environments
CAPACITY GUIDE
Check the maximum temperature difference for your aquarium
The performance table below shows the maximum cooling and heating temperature differences measured against an aquarium without the product installed.
When choosing the product, consider not only the aquarium size but also the highest room temperature and the heat generated by equipment installed in the aquarium.
Three conditions to check before purchase
Total aquarium volume
The water, substrate, and decorations all exchange heat.
Do not calculate capacity by subtracting the substrate and decorations from the water volume. Use the aquarium's full dimensions when checking the performance table.
Highest room temperature and target water temperature
Check the difference between the highest room temperature during the hottest season and the water temperature you want to maintain.
Heat generated in the aquarium
Heat from lighting, filters, submerged motors, and circulation pumps can raise the actual water temperature above room temperature.
Based on one ElecQUA Thermostat installed
40 L (10.6 US gal) → 60 L (15.9 US gal) → 80 L (21.1 US gal) → 120 L (31.7 US gal)
The table shows the maximum cooling and heating temperature differences compared with an aquarium without the product installed.
For example, the maximum cooling temperature difference for an 80 L (21.1 US gal) aquarium is 5°C (9°F).
If the water temperature without the product installed is 32°C (89.6°F), the expected water temperature with the ElecQUA Thermostat installed is approximately 27°C (80.6°F).
Setting a lower target temperature does not increase the product's maximum cooling temperature difference.
※ Compare against the actual aquarium water temperature measured without the product installed, not the room temperature. Heat from lighting, filters, and other equipment, together with surrounding conditions, can make the aquarium water warmer than the room.
Aquarium size
45 × 30 × 32cm
- Maximum cooling difference
- 7°C (12.6°F)
- Maximum heating difference
- 11°C (19.8°F)
Aquarium size
60 × 30 × 35cm
- Maximum cooling difference
- 6°C (10.8°F)
- Maximum heating difference
- 9°C (16.2°F)
Aquarium size
60 × 35 × 40cm
- Maximum cooling difference
- 5°C (9°F)
- Maximum heating difference
- 8°C (14.4°F)
Aquarium size
60 × 45 × 45cm
- Maximum cooling difference
- 4°C (7.2°F)
- Maximum heating difference
- 7°C (12.6°F)
※ The time required to reach the maximum temperature difference varies with the room temperature and aquarium environment.
Aquariums up to 120 L (31.7 US gal)
Do not decide based on aquarium volume alone. Compare the highest and lowest water temperatures without the product installed and the target water temperature with the performance table.
If the aquarium has powerful lighting, a large filter, or other equipment that raises the water temperature, an additional ElecQUA Thermostat may be required.
Three-foot aquariums
In many three-foot aquariums, one ElecQUA Thermostat may not provide a sufficient temperature difference.
Starting with two units is recommended. Because the total volume varies with the aquarium's width and height, check both the exact dimensions and the required temperature difference.
Saltwater aquariums
In most saltwater aquariums, heat from lighting, circulation pumps, skimmers, and other equipment raises the water temperature above room temperature.
Do not decide based only on the highest room temperature. Determine the required cooling capacity from the highest water temperature measured without separate cooling equipment.
For aquariums over 120 L (31.7 US gal), consider multiple units or a larger chiller
The table shows the maximum cooling and heating temperature differences measured with one ElecQUA Thermostat in aquariums up to 120 L (31.7 US gal).
If the aquarium exceeds 120 L (31.7 US gal), or if the difference between the water temperature without the product installed and the target water temperature exceeds the range in the table, consider multiple ElecQUA Thermostats or a larger chiller.
PRODUCT SPECIFICATIONS
Check the product specifications and installation requirements before purchase
Check the product dimensions, power consumption, compatibility with aquarium glass up to 10 mm (0.39 in) thick, and the external clearance required for installation.
The seize-EQ103W is developed and manufactured in Korea and inspected before shipment. Product specifications and conformity information are provided below.
- Product name
- ElecQUA Thermostat
- Model
- seize-EQ103W
- Adapter input
- AC 100–240V, 50/60Hz, 2.5A
- Adapter output
- DC 12V, 7A, 84W
- Product power consumption
- 70W operating / 0.3W standby
- Product dimensions
- Approx. 9 × 22 × 13cm
- Weight
- Approx. 830g
- Installation requirements
- Aquarium glass up to 10 mm (0.39 in) thick / At least 11 cm of clearance outside the aquarium
- Water environment
- Freshwater and saltwater
- Operating modes and sound levels
- Silent 40dB / Normal 43dB / Turbo 46dB (Measured in a quiet space at a distance of 1m from the product)
- Sound-level note
- Perceived sound may vary with the installation space and ambient noise.
- Country of manufacture
- Republic of Korea
- Korean conformity registration
- R-R-EQA-seize-EQ103W
Compatible with aquarium glass up to 10 mm thick. At least 11 cm of clearance is required outside the aquarium for installation.
APP · CATALOG · SUPPORT
Find the app and product resources in one place
Download the app, open product catalogs and manuals, review frequently asked questions, and find customer support information.
ENGLISH
ElecQUA Thermostat Catalog
Explore key features, cooling and heating performance by aquarium size, installation requirements, and product specifications in English.
2.4 MB · 19 pages
REVIEWS
Read reviews from customers with aquariums similar to yours
See the ElecQUA Thermostat installed in different aquariums and read the experiences of verified customers.
Cooling results and perceived sound vary with aquarium size, room temperature, heat from equipment, and the operating mode. Before choosing the product, refer to reviews from customers with environments similar to your aquarium.