Compact USB Aquarium Heater — steady 26°C heat for small tanks Why you need it Keeps betta and tropical fish comfortable by maintaining a constant 26°C with intelligent heating control, eliminating the need for manual temperature adjustments. Small, quiet, and lowpower (10W), designed specifically for desktop and nano aquariums where space and discreteness matter. Built for safe, longterm underwater use with a shatterproof exterior and rubbersealed waterproof construction to reduce leak and electrical risks. Key benefits and features Constant, reliable temperature: Automatically holds water at 26°C so fish stay in a stable, stress environment. Easy status monitoring: Red/green indicator lights show heating status at a glance, simplifying everyday use. Spacesaving design: Compact, lightweight form factor fits unobtrusively in 3L small tanks and other desktop aquarium setups. Safe, aquariumfriendly build: Crackresistant housing and a shatterproof shell protect the unit from damage; rubber seals keep water out of internal electronics. USB powered: Plugs into any standard USB port or power bank—no wall outlet required for temporary or mobile setups. Compatibility and performance Intended for small aquariums and desktop tanks (3L and similar volumes). The 10W output is optimized for compact environments where gentle, consistent heating is needed. Suitable for tanks housing betta and other small tropical species that require a stable 26°C habitat. Practical use scenarios Office or dorm desktop aquarium: Maintain a steady 26°C in a 3L betta tank without bulky equipment or dedicated outlets. Quarantine or hospital tank: Portable USB power and reliable temperature control keep fish stable during treatment or observation. Travel, classroom, or mobile displays: USB operation allows safe heating from a power bank or laptop for shortterm setups and demonstrations. What it solves Prevents temperature swings that stress fish and can cause health problems. Removes the need for frequent manual thermostat adjustments. Provides a compact, safe heating solution for small or temporary aquariums where standard heaters are impractical. Materials and safety notes Shatterproof exterior and crackresistant construction with rubbersealed waterproofing to reduce electrical hazards in submerged use. Designed for small tanks; not intended for largevolume aquarium heating. Always follow manufacturer instructions for installation and monitoring.