Plug into any USB port. Lock at 26°C. Forget about it. — Top-Rated: 52% Repurchase Rate
A capsule-sized USB heater designed for nano tanks, desktop aquariums, and small reptile enclosures up to 3 liters. Powered by a standard 5V/2A USB interface — safe enough to run from a phone adapter or power bank, with no high-voltage risk. The built-in thermostat locks at 26°C (79°F), the biological sweet spot for tropical fish, betta fish, and amphibians like Pacman frogs. Small enough to tuck behind decor without intruding on swimming space. Available in multiple versions including a basic constant-temperature model, an upgraded dry-run auto shut-off model, and an adjustable touchscreen model for tanks requiring a different target temperature.
Key Features:
- USB 5V/2A powered — no high-voltage risk, runs from any adapter or power bank
- Locks at 26°C / 79°F — biological sweet spot for tropical species
- Capsule body fits nano tanks — hides behind plants and decor
- Over-temperature protection — shuts off if water exceeds 36°C, resumes at 34°C
- Dry-run auto shut-off (upgraded model) — sensor cuts power when water level drops
- Touchscreen adjustable model available for custom temperature targets
- Please use a 5V/2A adapter for optimal heating performance