Compact aquarium heater designed for safety and reliable 25°C temperature control Key benefits Protects aquatic life: high-temperature resistant ABS shell shields fish and turtles from direct contact with the heating element and prevents aggressive fish from hitting the heating rod. Stable temperature, less stress: fixed constant temperature of 25°C with an automatic thermostatic core that stops heating when the set temperature is reached, preventing overheating or “cooking” of fish. Easy status monitoring: high-brightness top indicator with blue light for insulation status and red light to show active heating. Space-saving and unobtrusive: mini form factor fits small tanks or tight setups without taking up space. What makes this heater stand out Durable construction: solid black black gold material casing combined with a high-temperature ABS outer shell for long service life. Fast, precise heating: nickel-chromium heating wire provides rapid heat gathering and accurate temperature control for stable aquarium conditions. Certified and versatile: 3C certification and dual-use design for both open seawater and freshwater applications. Energy conscious and safe: efficient heating reduces power draw while the thermostatic core prevents continuous overheating. Features at a glance Fixed constant temperature: 25°C Shell: high-temperature resistant ABS Casing material: solid black black gold material Heating element: nickel-chromium wire Indicator lights: top-mounted — blue for insulation, red for heating Size: mini, compact design Safety: automatic thermostatic shutoff when set temperature reached Certification: 3C Suitable for: fresh and sea water Practical use scenarios Home turtle and small fish tanks: the protective ABS shell prevents turtles or larger fish from contacting the heating rod while maintaining a steady 25°C environment for comfort and health. Saltwater or reef tanks: nickel-chromium heating wire and 3C certification allow reliable use in open seawater tanks that require stable temperatures. Quarantine or breeder tanks: compact size and precise thermostatic control maintain safe conditions in small hospital or breeding setups without taking up space. Compatibility and installation notes Designed for small, compact aquarium setups where a mini heater is preferred. Ensure proper placement and secure mounting so the ABS protective shell can prevent direct contact with animals. Suitable for both freshwater and seawater systems; follow standard aquarium electrical safety practices. This heater provides a safe, compact solution for maintaining a constant 25°C tank temperature while protecting fish and turtles, with quick heating performance, clear status indicators, and 3C certification for dependable use.