Best Betta Heaters: Keeping Your Betta Fish Happy and Healthy

The Slim heater will increase the water temperature of mini aquariums up to 10 gallons by a few degrees compared to the ambient room temperature; The Slim heater can be used in glass, acrylic, plastic fish bowls and aquariums; Safe to use under gravel; Please note, Slim heaters are not suitable to be used in environments without water

Extra small slim fish tank heater is a great choice for Betta fish & suitable for fish tanks 2 to 5 gallons, measures 3.5-inch diameter, 7.5 watt; Plug and Play universal fish tank heater; No temperature to set; slim heater provides warmth for betta fish without taking up much room

Heater can easily be placed submerged in water or even under the tank gravel; The 90 degree angle makes this great for Betta acquariums; Safe to use in glass, plastic and acrylic fish tanks

Plug & play universal fish tank heater, the slim fish tank heater can be used in both fresh or saltwater environments

Easy to hide fish tank heater is ideal to use for betta fish, gold fish and glow fish

【Oval Mini Size, For 1-26 Gallons】This small submersible aquarium heater is perfect for freshwater and saltwater, with an oval miniature design that takes up little space and is more suitable for small fish tanks and turtle tanks. There are 5 different power (15/25/50/75/100W), check the size chart to find your desired heater.

【Safe, Fast and Precise Heating】The internal material of this fish tank heater is explosion-proof insulated quartz tube and nickel-chromium heating wire, which is safer than traditional coil heaters and has better thermal conductivity. The built-in smart thermostat makes the temperature accuracy within ±1℉/±1℃.

【4 Safety Protection Settings】①Automatically stops heating when the set temperature is reached. ② Automatically turns off when the heater is exposed to air and when the water temperature exceeds 95℉(35℃). ③High quality plastic cover can effectively protect small fishes from getting burned. ④IP68 waterproof, UL certification plug and power cord make the aquarium heater safe and non-leakage when in use.

【Easy to Use and Operate】①Memory Function: Each time the heater is powered off and turned on again, the previous temperature setting will be automatically retained. There is no need to repeat the setting every time. ②External Controller: It’s easy to adjust the temperature and change units without getting your hands wet. The LED digital display shows real-time water temperature clearly.

【Suggestions for Use】When using, please immerse the aquarium heater completely in the water, but not bury it in the sand. Fix it horizontally or vertically with suction cups, and place it where the water flows. We offer a 12-month warranty and professional after-sales service, any questions, please don't hesitate to contact us.

Safe Rugged Construction -- Built in shatterproof QUARTZ tube wrapped with two heating element mica plate and nickel wire, along with high-impact plastic housing, hygger submersible Aquarium Heater ensures the safety of your pets while maintaining proper temperature.

At-A-Glance Temperature Display -- heater rod shows real time water temperature and indicator light. It will be red when heating, green light when the proper temperature has been reached.

External Knob Controller Memory Function -- allows you quick set temperature without getting hands wet especially in winter, adjustable wide temperature range of 59°F to 93°F in 1-degree increments. Memories last setting when you unplug it to water change.

Out of Water Shut Off Protection -- feature to ensure it doesn’t overheat and cause harm to your livestock. Turn off before it exceeds desired temperature. Shatterproof plastic guard protects fish/turtle from impact and making contact, easy to detach to cleaning

Great For Small, Shallow Tank -- slim flat profile mini tank heater measures 4.3''x 1.8''x 0.9'', which is quiet space saving and easy to hide behind filter/wood/rock with two strong suction cups mount. Thanks to the flat design, it can be placed vertically or horizontally at gravel free aquarium bottom to heat up low water level turtle tank.

★【Betta Heater】This Fish Tank Heater should be 100% submerged into water, Ideal for small glass or acrylic desktop aquariums up 1 to 6 Gallons, not suitable for less than 1 gallon tank.

★【Quick and Easy Installation】:Vertical or horizontal placement using, Aquarium heater automatic temperature control 78℉, no need to adjust temperature, easy to operate, fishes happy.

★【How it Works】: Plug in, red light turns on, the heater will start working until water temperature up to 78°F, and red light off, then the green light will turn on, heater stop working and keeping constant temperature 78°F. Accuracy：±3°F

★【Note】: Do not operate or leave product plugged in when your water tank is out of water, heater should be fully submerged into water. Please install a water pump or filter to help water circulating while heating.

★【SATISFACTION GUARANTEED】Our Aquarium Heater is built with durability in mind and safety for every design. In the remote possibility that you’re not satisfied with our product, just contact us, and we will gladly give you a new Aquarium Heater replacement. 12 Month Warranty and 24 Hour Professional After-sales Service.

【25W Aquarium Heater】Orlushy 25w fish tank heater can be applicable to 1-6 gallons tank. It is 4.7 inches in length, ideal for use in low water level and won’t take up mech place, easy to hide in small tank. Please fully submerged the heater vertically into water in fish tank, and horizontally into water in turtle tanks.

【Easy to Operate 】This aquarium heater is automatic constant temperature heating when the power is switched on. The preset temperature is 78℉. Accuracy is ±3℉. Stair shape heating that red light is on and heater starts to intermittently heat the water to the preset temp, saving energy and electricity. When green light is on, heater stops working and maintains constantly 78℉.

【Durable & Material】 The durable material of the heater ensures safe operation. The outer shell covering the whole body of the heater is made of heat-resistant ABS material that it won’t deform and melt under high temperature. The heating rod is made of nickel-chromium heating wire to faster heating rate, and non-corrosive quartz glass.

【Cautions】 1.Please ensure the heater is 100% submerged into the water before plug in the power. 2. Please unplug the power and cool down the heater for 10-20 minutes before taking it out to clean the fish tanks or change the water.

【Guaranteed Customer Service】 Orlushy fish tank heater is made with great safety and durability for use. We guarantee 1 -Year warranty. If there is any issue with our product, please contact us, and we would gladly offer you after-sales service.

Tetras Thrive When Right Temperature Is Provided --- Neon tetras, in their native Amazon habitat, live in a temperature range between 70°F to 81°F. This ensures their optimal comfort and metabolic efficiency. Any temperature below 70°F will cause your tetras to enter a state of minimal activity and they will be stressed and miserable. Make sure they are at their optimal health and performance with this heater.

Automatically Reaches The Preset Temperature --- The smart SunGrow heater for freshwater fish has a built-in electronic thermostat to automatically maintain water around 75°F which is ideal for most tropical fish. It saves you from the trouble of constantly keeping a check on the temperature of your tank. It will automatically shut down when it reaches the desired temperature, no manual adjustment is needed.

Fully Submersible Water Heater --- This 10-watt aquarium heater supports 1.5 gallons (5 liters) fish tank. Its exterior is designed tougher than glass and the sealed polymer can be submerged into your tank. The heating element is surrounded by thick plastic to ensure the protection of your fish.

Creates The Ideal Conditions For Flora And Fauna — Neon tetras from the character family are basically tropical freshwater fish. They need warmer water to live in. This heater will create the ideal conditions for them. The warm water will keep them calm and happy and make their metabolic process efficient. A few preconditions are required to allow it to run with maximum efficiency. The heater must be completely submerged in the water and the indoor temperature should be around 62-75°Fahrenheit.

Suction Cups Included For Easy Installation ---- Easily install the SunGrow Heater vertically or horizontally by using the built-in suction cups to attach to your tank. The best location to place the heater is in the stream of a powerhead or near the water flow, such as the outlet (or inlet) from the filter. This way the heat is evenly distributed throughout your tank.

𝟮𝟱𝙒 𝘽𝙚𝙩𝙩𝙖 𝙏𝙖𝙣𝙠 𝙃𝙚𝙖𝙩𝙚𝙧: Length - is 6.8 inches, 110V/60Hz, Cord length is 4.0ft, Suitable for 1-5 gallons aquarium, IP 68 waterproof, anti-corrosion, please choose the right wattage aquarium heater according to our size chart

𝙏𝙚𝙢𝙥𝙚𝙧𝙖𝙩𝙪𝙧𝙚 𝙍𝙖𝙣𝙜𝙚 𝟲𝟯-𝟵𝟱℉: Adjustable aquarium heater for easy use, just turn the top knob to freely adjust the temperature you need. We also provide a free sticker thermometer for each customer, so you can observe the water temperature of the fish tank at any time

𝙃𝙤𝙬 𝙞𝙩 𝙒𝙤𝙧𝙠𝙨: Plug in the power supply and check whether the indicator is on. The yellow light means the heater is working. When the water temperature is lower than the set value, the fish heater will automatically start heating. When the water temperature reaches the set value, the heating will stop and the indicator lights off

𝘿𝙪𝙧𝙖𝙗𝙡𝙚 𝙈𝙖𝙩𝙚𝙧𝙞𝙖𝙡: Use high-quality 2mm thickened glass with excellent explosion-proof performance, and anti-corrosion, which can be used in fresh water and salt water. Double sealing design, IP 68 waterproof, insulating, anti-leakage, safe and reliable to use

𝙁𝙪𝙡𝙡 𝙎𝙪𝙗𝙢𝙚𝙧𝙨𝙞𝙗𝙡𝙚 𝙒𝙖𝙩𝙚𝙧 𝙃𝙚𝙖𝙩𝙚𝙧: Betta fish tank heater must be completely submerged in the water before turning on the power. To clean the tank or move the heater, unplug it first. We provide a 1-year warranty for our products. If you have any suggestions for this heater, please feel free to let us know. Let's create a warm and comfortable environment for your lovely fish together!

【50 Watt Aquarium Heater】This fish tank heater is suitable for 5-15 gallons tanks. Voltage 110-120V. Power cord length is 4ft. With 2 strong suction cups, it's easy to install it on glass, acrylic and plastic tank. Great for freshwater and saltwater aquariums.

【Adjustable Temperature】Just turn the knob on top of the tank heater and you can easily get the temperature you want (From 64℉ to 93℉). The fish heater comes with a submersible thermometer, so it's convenient to check or adjust the temperature in real-time.

【Automatic Constant Temperature】With the intelligent temperature control system, it can make us keep fish more easily. No need to worry about overheating situation. When the water temperature is lower than the set value, the heater starts heating and the indicator light is on. When the water temperature reaches the set temperature, the heater stops heating and the indicator light goes off to keep the constant temperature.

【Sturdy and Durable】FREESEA submersible heaters are made of 2mm thickened quartz glass material, which is resistant to breakage, corrosion and abrasion. With high temperature resistant nichrome wire, the water heats up faster and longer service life.

【Satisfaction guaranteed】Our aquarium heaters are made with durability and safety in mind for each design. If you have any questions, please feel free to contact us! We will gladly offer a prompt, courteous refund or a new replacement. 12 Month Warranty and 24 Hours Professional After-sales Service.

PERFECT MINI HEATER FOR 1~1.5 GALLON TANK - For a Betta breeder with a 1 to 1.5 gallon small tank, it is very difficult to choose a suitable heater. Because most of the heaters on the market are too big for this small tank. This not only affects us to watch our beautiful Betta, but also reduces the activity space of the Betta. Now DaToo Mini Aquarium heater can help you solve this problem. Ultra-small and thin size, perfectly hidden in a 1~1.5 gallon tank, your Betta will be happy with it! !

CONSTANT TEMPERATURE & NO NEED TO ADJUST - DaToo 10W MINI Aquarium Heater can automatically maintain a constant temperature between 75°F and 82°F (depending on the external environment), no need to set. This temperature range is ideal for most tropical fish and is very beneficial for the reproduction of betta and promotes their metabolism. With no extra work, just plug it in and the DaToo 10Watt Small Fish Tank Heater will help your fish stay healthy and comfortable. Great for kids!!

24V SAFE VOLTAGE & POWER OFF AFTER LEAVING WATER - The output voltage of the DaToo Betta Heater is only 24V, which not only ensures the safety of the fish, but also ensures the safety of the user. No need to worry about leakage, you can rest assured to use it for your children. The Betta heater needs to be completely submerged in the water. If it leaves the water, it will automatically stop heating to prevent dry burning (heating indicator is green), which is very safe.

PTC HEATING & ONLY SUITABLE FOR FRESHWATER - Unlike conventional glass aquarium heaters, PTC has better thermal conductivity and heating rate, no explosion, no breakage. Very energy efficient and environmentally friendly. Your child can operate it easily and is very safe. This mini fish tank heater is only suitable for fresh water tanks.

ATTENTION & ONE YEAR WARRANTY - This is 10W MINI Aquarium Heater, size is 3*2*0.26 inch, fit 1~1.5 gallon small tank. Only for fresh water tanks. One Year Warranty and 100% Money-back Guarantee. Buy DaToo products with confidence. JUST DO IT, Let’t Go!!

【 Betta Heater】 This 50W fish tank heater is suitable for 1-12 gallons glass or acrylic aquariums. Please choose the appropriate wattage betta heater according to your aquarium size.

【Automatic constant temperature】When the water temperature reaches 78°F, the green light is on, stops working and will automatically keep the water temperature of the fish tank at 78℉. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78°F, the heater automatically starts to heat and the red light is on.

【Note 】The Aquarium heater needs to be used for 100% diving, the heater must be fully submerged into water. Please unplug the power plug when changing the fish tank. The heater rod is suitable for people over 16 years old.

【Mini fish tank heater】 For most fish lovers who have small fish tanks of 1 to 5 gallons , a small heater means more space for fish.

【Easy installation】Vertical or horizontal placement into the water using, automatic temperature control 78°F, no need to adjust temperature, simple operation.