Accurate temperature control - Built-in thermostat maintains the water at the set temperature within plus or minus 1 degree Celsius for reliable heating. Wide compatibility and low water level use - Suitable for desktop nano tanks, mini tanks, turtle tanks, tropical and betta fish, and other small freshwater and saltwater setups. - Works with very shallow water, as low as 3.0 cm. Two wattage options with secure mounting - 35W model for 1–10 L tanks; 50W model for 10–20 L tanks. - Includes two strong suction cups for secure placement. - Comes with a 1 m power cord, suitable for turtle tanks and similar installations. Durable, precise construction - Thickened quartz glass with good sealing for long life. - After extensive testing, heating accuracy remains high with low drift. Easy to read status indicators - Red light indicates heater activity; green light indicates thermostat status. Use scenarios - Office desk nano tank (5–8 L): steady, accurate heating for bettas or small aquatic species. - Small freshwater or saltwater aquarium (12–18 L): reliable temperature control for a compact community tank. - Turtle tank or shallow-water setup: maintains warmth even when the water level is kept very low (as low as 3 cm).