Hygger Mini Pro Aquarium Heater 10W | Submersible Nano Tank Heater with LED Display

Keep your nano tank at a rock-steady temperature without a bulky heater hogging your aquascape. The Hygger Mini Pro is a thumb-sized submersible heater built specifically for small tanks — perfect for bettas, shrimp, and nano community setups. The 10W model is rated for tanks up to 5 gallons, and the external controller lets you dial in the exact temperature without ever getting your hands wet. Why We Stock It Super mini size — only about 4 inches long, easy to hide behind decor or plants LED digital display — see real-time water temperature at a glance External temperature controller — adjust the set temp without reaching into the tank Adjustable range 59-93°F (15-34°C) — the ideal betta range of 78-80°F is easy to hold Shatter-resistant quartz glass with a protective guard so fish can't scald themselves Running-dry protection — shuts off automatically if the heater is exposed to air Overheat protection — stops heating if water climbs above the safe range Memory function — keeps your setting after a power outage Freshwater and saltwater safe Specs Wattage: 10W Tank size: Up to 5 gallons Temperature range: 59-93°F (15-34°C), ±1°F accuracy Voltage: 110-120V, 60Hz, US plug Mounting: Suction cups, vertical or horizontal Includes: Heater rod, external controller, suction cups, user manual Setup Tips Keep the heater fully submerged at all times — don't bury it in substrate Mount it near your filter outflow so warm water circulates evenly Keep the controller dry and away from splash zones Unplug and let it cool before water changes Pairs perfectly with our live bettas and nano community fish. A stable temperature is one of the biggest factors in keeping tropical fish healthy — especially through the cooler months.