The all-new Fluval T Series submersible aquarium heaters bring together electronic precision, reliable monitoring, and various safety features. They are designed to conveniently maintain the desired water temperature. Available in five model sizes, these heaters can fit today's most popular aquarium sizes. With industry-leading digital technology, an advanced electronic sensor precisely keeps the water at the set temperature. 24/7 monitoring regulates the temperature and prevents large, unsafe fluctuations. The heat indicator is really useful. A red light shows when the heater is working, and a blue light indicates it's in standby mode. Fish are sensitive to temperature changes, so a reliable heating system is crucial for their well - being. These heaters automatically cut power when there's no water to prevent overheating. They also come with several great features. The large grip dial allows you to easily adjust the water temperature from 22 - 32˚C / 72 - 90˚F. The heater guard offers extra protection against accidental breakage. The fully submersible design with a secure suction mount gives you the flexibility to place it vertically or horizontally anywhere in the aquarium. There's also an optional spacer kit that can improve heat distribution and performance. Check out the model comparison below:
| MODEL
Item # | T50
14880 | T100
14881 | T150
14882 | T200
14883 | T300
14884 |
| --- | --- | --- | --- | --- | --- |
| Aquarium
Capacity | 15 US Gal
50 L | 30 US Gal
100 L | 45 US Gal
150 L | 65 US Gal
200 L | 80 US Gal
300 L |
| Wattage | 50W | 100W | 150W | 200W | 300W |
| Length | 10.5”
26.6 cm | 10.5”
26.6 cm | 12.5”
31.8 cm | 12.5”
31.8 cm | 14”
35.7 cm |










Using your Fluval T Series heater is easy. First, decide where to place it in the aquarium. You can position it vertically or horizontally thanks to the secure suction mount. If you want better heat distribution, you can use the optional spacer kit. Then, use the large grip dial to set the water temperature between 22 - 32˚C / 72 - 90˚F. Once you've set the temperature, the heater will start working. You can tell when it's heating because the red light will turn on, and when it's in standby, the blue light will be on. Here are some important things to keep in mind. Make sure the heater is fully submerged in water before you turn it on. If there's no water, the heater will automatically cut power to prevent overheating, but it's still better to avoid such situations. Also, be careful with the heater guard to prevent accidental breakage. For maintenance, clean the heater regularly to keep it working well. You can use a soft cloth to wipe it down. Check the suction mount to make sure it's still secure. If you notice any problems with the heater, like inaccurate temperature readings or a malfunctioning light, it's a good idea to get it checked or replaced.