Tetra HT 300W is a fully electronic submersible aquarium heater designed to maintain a stable, adjustable water temperature for tropical fish. Its integrated thermostat and microprocessor provide precise temperature control, with an adjustable range of 20°C to 32°C. The heater features a three-stage LED indicator, a thick heat-resistant and shock-resistant borosilicate glass tube, a protective plastic cap, and an automatic safety shut-off function. Two suction cups secure it to the aquarium glass, while the 1.6 m power cable allows convenient installation.
**Directions for Use:** Attach the heater vertically inside the aquarium using the supplied suction cups, preferably near a filter or pump to ensure even heat distribution. Set the desired temperature using the control at the top. Keep the heater immersed to at least the minimum water-level mark, and unplug it before removing or cleaning it. Allow it to cool for approximately 15 minutes before handling.
**Power:** 300 W
**Recommended Aquarium Capacity:** 300–450 L
**Temperature Range:** 20–32°C
**Dimensions:** Approximately 36.7 cm high × 3 cm wide × 4.3 cm deep
**Cable Length:** 1.6 m
**Suitable for:** Freshwater and marine aquariums, when used according to the manufacturer's instructions.