1. Важни безбедносни инструкции
Please read and understand all safety instructions before operating this appliance. Failure to follow these instructions may result in electric shock, fire, or serious injury.
- Always disconnect the heater from the power supply before performing any maintenance, cleaning, or handling inside the aquarium.
- Ensure the heater is fully submerged in water before connecting it to the power supply. Never operate the heater dry.
- The heater is designed for indoor use only, specifically for aquariums. Do not use it for any other purpose.
- Inspect the heater and its power cord regularly for any signs of damage. Do not use if damaged.
- Да се чува подалеку од дофат на деца.
- The heater features an additional safety shut-off to prevent overheating.
- The borosilicate glass tube is heat-resistant and shock-resistant, but handle with care to avoid breakage.
2. Производот завршиview
The Tetra HT 25 Electronic Aquarium Heater is designed to maintain a stable and optimal water temperature for tropical fish in aquariums ranging from 10 to 25 liters. Its fully electronic design ensures high precision and reliability.

Image 1: Tetra HT 25 Electronic Heater. This image displays the packaging for the Tetra HT 25 Electronic Heater. The packaging highlights the product name 'HT 25 Electronic Heater' and the brand 'Tetra'. It also shows the heater unit itself, which is black with green accents, and indicates features such as suitability for 'up to 25L' aquariums, 'plug and play' operation, and 'safety tested' certification. The heater is designed for 'fish well-being' by maintaining 'optimal temperature'.
Клучни карактеристики:
- Electronic Precision: Fully electronic with an integrated microprocessor for accurate temperature control.
- Прилагодлива температура: Temperature adjustment knob allows setting between 20°C and 32°C in 1°C increments.
- LED статус: 3-сtage status LED for easy monitoring of the heating phase.
- Издржлива конструкција: Extra thick, heat-resistant, and shock-resistant borosilicate glass tube.
- Безбедносни карактеристики: Waterproof cap, fully immersible design, and additional safety shut-off.
- Лесна инсталација: Secure attachment with two suction cups and a 1.6 m long power cord.
- Aquarium Size: Suitable for aquariums from 10 to 25 liters.
3. Поставување и инсталација
Follow these steps to correctly install your Tetra HT 25 Electronic Aquarium Heater:
- Отпакувај: Carefully remove the heater from its packaging and inspect it for any damage.
- Поставување: Choose a location in your aquarium where water circulation is good. This ensures even heat distribution. Avoid placing it directly in the substrate.
- Безбеден прилог: Use the two provided suction cups to securely attach the heater to the inside wall of your aquarium. Ensure it is fully submerged and positioned vertically or at a slight angle.
- Поставување на температурата: Before plugging in, use the temperature adjustment knob at the top of the heater to set your desired water temperature (between 20°C and 32°C). For most tropical fish, a temperature between 24°C and 26°C is ideal.
- Поврзување за напојување: Once the heater is fully submerged and the temperature is set, connect the power cord to a suitable electrical outlet.
- Initial Monitoring: Monitor the aquarium temperature with a separate thermometer for the first 24 hours to ensure the heater is maintaining the desired temperature accurately. Adjust if necessary.
Важно: Ensure the heater is always fully submerged when powered on. Operating it dry will cause damage and void the warranty.
4. Операција
The Tetra HT 25 heater operates automatically once plugged in and submerged. The integrated microprocessor continuously monitors and adjusts the heating element to maintain the set temperature.
- Прилагодување на температурата: To change the temperature, unplug the heater, adjust the knob to the new desired setting, and then plug it back in. Allow time for the aquarium water to stabilize at the new temperature.
- LED статус: 3-титеtage status LED provides visual feedback on the heater's operation:
- LED вклучено: The heater is actively heating the water.
- LED исклучено: The water has reached the set temperature, and the heater is in standby mode.
- Трепка LED: Indicates a potential issue or safety shut-off activation. Refer to the Troubleshooting section.
- Прекин на напојувањето: Во случај на моќ outage, the heater will resume normal operation once power is restored, maintaining the last set temperature.
5. Одржување и чистење
Редовното одржување обезбедува долготрајност и ефикасно работење на вашиот грејач.
- Исклучете го напојувањето: Always unplug the heater from the power outlet before removing it from the aquarium or performing any cleaning.
- Олади: Allow the heater to cool down for at least 15-20 minutes after unplugging before removing it from the water. This prevents thermal shock to the glass.
- Чистење: Gently wipe the heater's glass tube with a soft cloth or sponge to remove algae or mineral deposits. Do not use abrasive cleaners or harsh chemicals.
- Вшмукување чаши: Periodically check the suction cups for wear and tear. Replace them if they lose their grip to ensure the heater remains securely attached.
- Складирање: If storing the heater, ensure it is clean, dry, and stored in a safe place away from extreme temperatures.
6 Смена на проблеми
If you encounter issues with your Tetra HT 25 heater, refer to the following common problems and solutions:
| Проблем | Можна причина | Решение |
|---|---|---|
| Heater not turning on (LED off) | No power; heater already at set temperature. | Check power connection. Verify aquarium temperature with a separate thermometer. If temperature is below set point, check power outlet. |
| Aquarium water not heating up | Heater too small for aquarium volume; incorrect temperature setting; poor water circulation. | Ensure heater matches aquarium size (10-25L). Increase temperature setting. Improve water circulation (e.g., with a filter). |
| Heater LED flashing | Safety shut-off activated (e.g., heater operated dry or overheating). | Immediately unplug the heater. Allow it to cool down completely. Ensure it is fully submerged before plugging it back in. If flashing persists, the unit may be faulty. |
| Temperature fluctuates significantly | Poor water circulation; external temperature changes. | Ensure good water flow around the heater. Minimize drafts or sudden temperature changes in the room. |
If the problem persists after trying these solutions, please contact Tetra customer support.
7. Спецификации
- Модел: Tetra HT 25
- Моќност: 25 W
- Волумен на аквариум: 10 - 25 литри
- Температурен опсег: 20°C - 32°C (adjustable in 1°C increments)
- Димензии: Approximately 5 x 9 x 28 cm (Product Dimensions: 5 x 9 x 28 cm; 210 g)
- Должина на кабелот: 1.6 м
- Број на модел на ставка: 307049
- Материјал: Borosilicate glass tube, plastic cap
- Специфична употреба: Indoor aquarium heating
8. Гаранција и поддршка
The Tetra HT 25 Electronic Aquarium Heater comes with a 2 година гаранција од датумот на купување. Оваа гаранција ги покрива производствените дефекти под нормални услови на употреба.
Гаранцијата не покрива штети кои произлегуваат од:
- Неправилна инсталација или употреба.
- Operating the heater dry (not fully submerged).
- Accidental breakage or misuse.
- Неовластени поправки или модификации.
For warranty claims, technical support, or further assistance, please contact Tetra customer service through their official website or the retailer where the product was purchased. Please have your proof of purchase and the product model number (HT 25, Model 307049) available.





