GEX Auto Heater 55 for 18L Tank - Brand New, Unopened

Compact auto heater compatible with 18L of water.
Purchased in February, Reiwa 8 (2026).

[Product Name]
GEX Medaka Genki Auto Heater 55 - Fixed at 23°C for Optimal Spawning

[Manufacturer]
GEX

Product Features
● Features a unique Shuttle Structure designed for safety.
● The heating element and temperature control are separated into two tubes, enabling stable vertical installation (horizontal installation is also possible).
● Equipped with a dry-run detection temperature sensor that controls the heater cover surface temperature to a safe level when it detects power in the air.
● Power is cut off before the thermal fuse activates, allowing for reuse.
● The heater cover is made of flame-retardant resin, ensuring safety for both people and fish.
● Maintains a fixed water temperature of 23°C, allowing you to enjoy medaka spawning even in winter.
● Heater dimensions: Approx. W 5.3 x D 3.8 x H 11.6 cm
● Suitable aquarium size: For aquariums with a water capacity of approximately 18L or less (small aquariums)
● Power consumption: 55W
● Control temperature range: Fixed at 23°C
● Accuracy: ±1.5°C
● Heater cord length: Approx. 0.9m
● Equipped with power cutoff function (thermal fuse): Temperature sensor + thermal fuse
● Usage environment: Freshwater and saltwater

Store at room temperature, avoiding direct sunlight and high temperatures/humidity.

- Model Name: Auto Heater 55
- Applicable Water Volume: 18L
- Temperature Setting: 23°C
- Features: Compact design, equipped with safety functions
- Manufacturer Name: GEX

Thank you for looking.