FUMAK 10W Mini USB Aquarium Heater for Betta Tanks up to 1 Gallon | 5V/2A

Compact power for tiny tanks

Meet the FUMAK 10W Mini USB Aquarium Heater, a purpose-built solution for nano and betta tanks. Its ultra-compact form hides in plain sight, leaving more room for your aquatic décor while still delivering consistent warmth when connected to a 5V/2A USB supply.

Smart materials for steady heating

Crafted from durable alumina ceramic, this heater blends robust mechanical strength with reliable heat conduction. The ceramic construction stands up to routine water changes and splash risk, while its efficient design may help reduce energy use by an estimated 20–30% compared with traditional heaters.

• Durable alumina ceramic with strong heat conduction
• Excellent chemical stability for varied water types
• Energy-efficient performance that may reduce overall use

Precise temperature control you can trust

Inverter-based control with built-in regulation chips maintains a stable temperature within about 1°F. The built-in display shows both current water temperature and the set point, making adjustments straightforward and monitoring simple at a glance.

Safety features for peaceful aquariums

An automatic shut-off engages if water temp nears 97°F, helping prevent overheating. A memory function restores the last temperature after power is restored, reducing manual tweaks after outages. A dry-run safeguard adds another layer of protection during startup and maintenance.

Flexible, multi-use design

Although ideal for freshwater nano tanks, this heater also suits marine setups, turtle enclosures, small fountains, and even plant propagation environments. The compact size minimizes clutter while keeping warmth within reach.

• Best for nano and up to 1 gallon tanks
• Suitable for freshwater and marine environments
• Ideal for turtles, fountains, and plant propagation

Simple setup and ongoing reliability

Plug in via USB, place in the tank, and set your preferred temperature. The heater delivers steady heat quickly with minimal energy use and easy operation, so you can focus on enjoying your aquatic habitat.