Maintain a stable environment: Automatic thermostat holds the aquarium at an 26°C, reducing temperature swings that stress tropical fish and turtles and helping prevent illness. Simple plugandplay operation: USBpowered design lets you connect the heater to a standard mobile phone charger or a power bank for straightforward setup and flexible placement. Built for small tanks: Compact 52 mm length fits neatly into desktop or nano aquariums without taking up much space, while adding a clean, unobtrusive look. Safe, durable construction: Made from explosionproof quartz material to withstand aquarium conditions and minimize breakage risk. Clear benefits at a glance: Keeps water at a consistent, speciesappropriate temperature for tropical fish and turtles. Works with commonly available USB chargers and portable power sources for convenience at home or on the go. Small footprint preserves swimming space and maintains aquarium aesthetics. Quartz housing improves durability and safety compared with ordinary glass. Practical applications Small tropical aquarium: Use in a nano tank to maintain 26°C for guppies, tetras, or other small tropical fish where space and discreet equipment are priorities. Turtle or amphibian setup: Provide the steady warm water temperature needed by small aquatic turtles or amphibians in a compact habitat. Temporary or portable tanks: Power the heater from a phone charger or power bank for shortterm setups, quarantine tanks, or travel displays where traditional inline heaters are impractical. What you get Reliable temperature control set to 26°C via an automatic thermostat. USB power compatibility for wide charger and power bank support. Compact 52 mm form factor that fits small tanks. Explosionproof quartz construction for safer, longerlasting use. Installation and use tips Place the heater where water circulation is steady to ensure even temperature distribution. Use with compatible USB power sources rated for aquarium accessories; avoid submerging connection points or using damaged cables. Monitor water temperature after initial setup to confirm stable operation at 26°C. This heater is designed to provide straightforward, safe temperature control for small aquatic setups that house tropical fish or turtles, combining compact size, USB convenience, and quartz durability.