Hygger Nano 100W Submersible Heater for 15–20 Gallon Tanks | Digital Display & Controller

Small footprint, steady warmth for your aquatic world

The Hygger Nano Aquarium Heater is a 100W submersible unit designed to power 15- to 20-gallon freshwater setups. Its low-profile silhouette slides into corners without disrupting the aquascape, delivering reliable warmth where you need it most.

Real-time temperature data comes from a built-in probe fed to an external controller, so you can monitor and adjust with ease. With an accuracy target of ±2°F, you can create a comfortable environment for a variety of freshwater life while keeping power use in check.

What makes it stand out

• Hidden Heating Element: The compact 4.9 by 1.3 by 0.9 inch body stays out of sight while maintaining effective heat output.
• Alarm Reminder Function: Overheat alerts and low water level reminders help you respond promptly to tank conditions.
• Tank Compatibility: Built for 15–20 gallon aquariums, suitable for betta, shrimp, snails, and shallow-water turtles.
• Keep a Stable Temperature: An easy-to-read external controller covers 59°F–93°F; status LEDs show operation; memory function preserves settings after power loss.
• Durable Construction: Explosion-proof quartz glass tube, nickel-chromium heating wire, and a porous ABS shell promote safe, efficient heat transfer.

Practical scenarios and setup tips

In a betta tank or a mixed community, consistent warmth can support active behavior and comfortable daytime activity. The compact heater blends with driftwood, rocks, and plants, while leaving room for your favorite aquatic features to shine.

To get started, place the heater where water flow is steady but not directly rushing across the device. Set a mid-range target, then observe the tank for a few days and adjust if needed. Room temperature, lighting, and feeding routines can influence the actual water temperature, so periodic checks are wise.

Safety, maintenance, and care

• Follow the included installation and operation guidelines to maintain stable heat output.
• Inspect the glass and wiring for wear; replace if damaged to keep performance reliable.