boxtech Small Fish Tank Heater - Mini Aquarium Heater, 50w Submersible Turtle Heater with Adjustable Temperature External Controller for 3 to 12 Gallon Betta Aquarium Tanks

𝟓𝟎𝐰 𝐌𝐢𝐧𝐢 𝐀𝐪𝐮𝐚𝐫𝐢𝐮𝐦 𝐇𝐞𝐚𝐭𝐞𝐫: Small tank heater fits 3-12 gallon aquarium with 5.35ft power cord. Temperature can be accurately adjusted from 68 to 93°F. Ideal for use in low water level turtle tanks, fish tanks, betta tanks etc.

𝐎𝐯𝐞𝐫𝐡𝐞𝐚𝐭𝐢𝐧𝐠 𝐚𝐧𝐝 𝐃𝐫𝐲 𝐑𝐮𝐧𝐧𝐢𝐧𝐠 𝐏𝐫𝐨𝐭𝐞𝐜𝐭𝐢𝐨𝐧: Intelligent induction unit with auto memory function, can be safer for you and your fish. Fault code: E1 - Anti-dry protection, E3 - Overheating protection. Take the heater out of the water and put it back in when the error code appears.

𝐋𝐄𝐃 𝐃𝐢𝐠𝐢𝐭𝐚𝐥 𝐃𝐢𝐬𝐩𝐥𝐚𝐲 𝐚𝐧𝐝 𝐄𝐱𝐭𝐞𝐫𝐧𝐚𝐥 𝐓𝐞𝐦𝐩𝐞𝐫𝐚𝐭𝐮𝐫𝐞 𝐂𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐫: Digital temperature display can easily see real temperature and error code. External controller can let you adjust the temperature you want without getting your hands wet.

𝐄𝐧𝐞𝐫𝐠𝐲-𝐬𝐚𝐯𝐢𝐧𝐠 𝐚𝐧𝐝 𝐅𝐚𝐬𝐭 𝐇𝐞𝐚𝐭𝐢𝐧𝐠: Designed with metal-ceramic heaters are energy efficient, safety, durability, rapid heating and will maintain a constant aquarium water temperature after 72 hours of continuous heating.

𝐂𝐚𝐮𝐭𝐢𝐨𝐧: Press and hold for 3 seconds to toggle between °C and °F. Do not bury the heater in sand or mud; immerse the heater vertically in fish tanks and horizontally in turtle tanks.