A 25 watt fish tank heater is a good choice for a small tank.
The Best 25 Watt Fish Tank Heater
- YukiHalu Small Submersible Aquarium Heater, Mini Fish Tank Heater 25W 50W 100W with Built-in Thermometer, External Temperature Controller, LED Display, Used for 5/10/20 Gallons (25 Watts)
- Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
- PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks (Preset Temperature 78℉)
- HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (25W)
- DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
- Woliver Aquarium Heater,25W/50W/100W Small Submersible Heater with External LED Digital Temp Controller Suit for Marine Saltwater and Freshwater Turtle Fish Tank Heater
- NICREW Mini Aquarium Heater, Submersible Fish Tank Heater for Small Tropical Aquariums, 25 Watts
- Aquarium Heater Small Fish Tank Heater Submersible 25W 50W 100W, Precise Temperature Control with Intelligent Memory Function, External LED Digital Temp Controller Suitable for Betta Fish Turtle
- Betta Fish Tank Heater, 25W Mini Aquarium Heaters Free 2 Artificial Plants 1 Stick-on Thermometer Strip 2 Suction Cups, Water Warmer Temperature Controller Smart Thermostat for 3-5 Gallon Tank
- YOFOTHS Aquarium Heater 10W/25W/50W/100W/200W, Small Fish Tank Heater with Built-in Thermometer, Temperature Adjustable Mini Tank Heater for 5/10/20 Gallon, External Temperature Controller
YukiHalu Small Submersible Aquarium Heater, Mini Fish Tank Heater 25W 50W 100W with Built-in Thermometer, External Temperature Controller, LED Display, Used for 5/10/20 Gallons (25 Watts)
300 Reviews【Super Mini Size, 25Watt for 1-5 Gallons】 YukiHalu 25W aquarium heater is designed for 1-5 gallons mini fish tank. Compact design, take less space in the fish tank, easy to hide in the tank. Temperature can be accurately adjusted from 64 to 93°F. This heater suitable for both saltwater and freshwater. The rated voltage is 100-130V. 【Automatic Constant Temperature with 1℉Accuracy】Thanks to advanced Intelligent Frequency Conversion Technology, the water temperature can be kept constant with an accuracy of 1℉. The heater s working frequency will be changed according to temperature variation, and the heating is automatically stopped when the set temperature is reached. Compare to traditional heater, this new technology will cut down 49% electricity bill for you. 【Overheating Protection, Out of Water Protection】The power will be cut off and stop heating automatically if the heater out of water or overheating. Protect your fish. Never cook your fish. 30days full refund, 12-months warranty. 【External Temperature Controller, Never Wet Your Hands】Use an external controller to set the temperature instead of immersing your hands in water to rotate the dial. Never wet your hands or contaminating your tank. Strong suction cups, easy to install. 【Built-in Thermometer, Power-off Memory Function】Dual built-in temperature sensor, the water temperature will be displayed on the external temperature controller in real time. No need to buy other aquarium thermometer. The heater will remember the temperature setting, no need to reset the temperature after power off.
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Fish Tank Aquarium Heater - Adjustable Temperature Submersible Thermostat Heater,25W/50W/100W/150W/200W/300W
55 Reviews[PREMIUM SHATTERPROOF GLASS]Made of shatterproof glass and BPA-free plastic.Bnzaq aquarium heaters are fully submersible and safe for fish without any toxic substance producing.3 FREE artificial aquarium plants as ornament in your tank. [NO LONGER CHILL YOUR FISH]Automatically regulate and maintain water temperature，imitate the original ecological environment for your tropical fish.Provided fish with warm water environment.Perfect to apply to fresh and salt water. [ADJUSTABLE TEMPERATURE]Temperature range: 68°F~93°F.25W heater:suitable for fish tank within 7 gallons,Length:7.8 .Easy to adjust temperature by the aquarium heater that suit more species of fish. [AUTOMATIC CONSTANT TEMPERATURE]When water temperature reaches set value,the indicator light will be OFF and the heater will automatically stop heating.The heater will automatically start heating and indicator light will be ON if water temperature is low.You could place heater horizontally or vertically. [ATTENTION]Please place the heater near place (filter or pump) of water flowing to keep more even water temperature.Unplug the heater 30 minutes early when changing the water for the fish tank.
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PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip, Under 6 Gallon Fish Tanks (Preset Temperature 78℉)
1139 Reviews★【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. It is better to install a water pump 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.
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HITOP 25W 50W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Suction Cup (25W)
529 Reviews🐟 HITOP 25W aquarium heater, length 7.2-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums up to 10 gallon. 🐟 Thickened Glass: 2mm thickened quartz glass, 33% thicker than 1.5mm normal aquarium heaters, much safer for human and your lovely fishes. 🐟Adjustable and easy to use: This aquarium heater, adjustable temperature range 68 ~ 93 °F, after setting the temp you want, will on or shut off automatically when the water temperature changes, no extra adjustment is required. 🐟Accurate Temperature Control: This fish tank heater built-in thermostat, will automatically keep the water at the set temperature within±2°F error. Comes with an sticker thermometer to detect water temp at any time. 🐟 Easier installation, you can install it with any angle by 2 powerful suction cups, just make sure it is under water fully. Besides, we provide 1 more extra suction cup for spare (total 3 PCS).We provide 12 months warranty.
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DaToo Mini Aquarium Heater 25W Small Fish Tank Heater 25 Watt with Free Thermometer Sticker
45 Reviews🐠25W Betta Aquarium Heater: Creating and maintaining a perfect and comfortable water temperature for our cute fish is not easy, which requires a lot of effort. Now DaToo MINI 25W Aquarium Heater can help you make this easier. Precise and constant temperature, no need to set, keep the temperature of fish habitat in the best state at all times. You will find it very easy and happy to take care of pet fish！ 🐠Precise And Constant Temperature: No need to set, DaToo Fish Tank Heater will automatically keep the water temperature of the fish habitat at 78℉. This temperature is very suitable for betta and most tropical fish. When the water temperature is lower than 78℉, the heater starts to heat and the red light is on. When the temperature reaches 78℉, the heater stops heating and the green light is on. DaToo will always maintain this comfortable temperature for your beloved fish! 🐠The Smallest 25W Betta Heater: For most fish lovers who have small fish tanks of 1 to 5 gallons, a small heater means more space for fish. This is the smallest 25W aquarium heater on the market, only 0.2 inches. No matter how small your fish tank is, it can be used perfectly in it, and you can t even find it. Very MINI!! 🐠Safe And Durable: Unlike traditional plastic seals, DaToo uses a rubber sealing layer, which ensures that DaToo has better sealing and safety performance, and will never leak electricity or water. Quartz glass material, explosion-proof and crack-proof, more sturdy and durable, without worrying about damage. 🐠One Year Warranty & Satisfaction Guarantee: This heater is ideal for 1 to 6 gallon small glass or acrylic desktop aquariums. When in use, it needs to be submerged 100% in water. We provide one year warranty and 24 hours professional customer service. Buy With Confidence!
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Woliver Aquarium Heater,25W/50W/100W Small Submersible Heater with External LED Digital Temp Controller Suit for Marine Saltwater and Freshwater Turtle Fish Tank Heater
36 Reviews🐠【25Watt Heater】: Made of thicker quartz, this heater is shatter-proof and blast-proof.This Aquarium Heater is suitable for 1-3 gallons aquariums, voltage 110-120V/60 Hz, power cord is 4.3ft, please choose the right wattage aquarium heater according to our size chart.(It suit for fishes and Tortoises ) 🐠【Temperature range】: Temperatures Ranges 64℉ to 93℉ , It is very easy to adjust the temperature you need.This submersible heater is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient and safe for you to set the temperature, no need to take the heater out from water and risk burning yourself. 🐠【Intelligent Temperature Control】：The 25W Fish Tank Heater have Automatic constant temperature function, When the water temperature is lower than the set temperature, the fish heater will automatically start heating until the water temperature reaches the set temperature;When water temperature reaches to specified temperature value, heater will automatically stop heating. 🐠【Auto Shut Off When Overheating or Leaving the Water】:When the water temp was over 95°F,the controller will auto shut off to prevent overheating;When the heater have not fully submerged the water,the heater display will come up E1 ,and stop heating and will automatically restart heating after you place the heater fully under water. 🐠【Safety Warning】:1.The Aquarium heater is 100% submersible use only, during its heating time, heater must be 100% submerged into the water.For you safety,Please unplug the power supply when cleaning the fish tank or aquarium water changes. 2.This Heater rod is forbidden to be used by people under 18 years of age,if the under adult want to use,should be under adult guidance or supervision.
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NICREW Mini Aquarium Heater, Submersible Fish Tank Heater for Small Tropical Aquariums, 25 Watts
1246 ReviewsPreset temperature has been set to 78.8°F, appropriate for most tropical fish, shrimp and aquatic plants requiring stable conditions With accuracy of ±2°F and overheat protection, protect your tank from extreme temperature LED indicator light will turn to red when the heater is actively heating With compact design and built-in suction cups, the heater can be easily placed vertically or horizontally in aquariums completely This 25-watt submersible heater works for small aquariums, up to 5 gallon, to provide the ideal water temperature
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Aquarium Heater Small Fish Tank Heater Submersible 25W 50W 100W, Precise Temperature Control with Intelligent Memory Function, External LED Digital Temp Controller Suitable for Betta Fish Turtle
86 ReviewsBuilt with Water Shortage Protection. SZELAM submersible aquarium heater is more sensitive and intelligent to resist water shortage. When the heater exposed to air or is not fully submerged, it will automatically power off and the external controller will display error code E1 . Small Aquarium Heater with Precise and Steady Temperature Control. Our aquarium heater has sensitive internal temp probe, which is more precise to control the water temp, making the temp difference within ±1℉ and providing suitable living environment for your aquatic creatures. Top Quality Material Ensures More Safety. Made of heat-resistant thick quartz heating tube with black quartz sand, this upgraded fish tank heater features explosion-proof and anti-corrosion during heating, much safer than traditional heater. With SZELAM submersible aquarium heater, your beloved fishes will live happily during winter. Safety Guarantee with CE & FCC Certification. SZELAM submersible fish heater is safe to your beloved fishes, as the power cord has CE & FCC Certification, which makes this aquarium heater much safer while heating better than other normal fish heater. Just try this, we won t let you down! 25 Watt Small Fish Tank Heater. This 25W mini size (6 *1 ) submersible fish heater is ideal for 1-3 gallons tank. Very easy to apply by using strong suction cup. And it is really a great gift for fish lover. By using SZELAM Aquarium Heater, your lovely fishes will no longer to fear the winter!
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Betta Fish Tank Heater, 25W Mini Aquarium Heaters Free 2 Artificial Plants 1 Stick-on Thermometer Strip 2 Suction Cups, Water Warmer Temperature Controller Smart Thermostat for 3-5 Gallon Tank
27 ReviewsBetta Fish s Favorite Gifts: ZEETOON Fish Tank Heater Suitable for all kinds of aquarium pets, Betta, tropical fish, goldfish, ornamental fish and turtles, can work in both brine and fresh water. Your little fishes and turtles will no longer fear the winter! 2 Aquarium Decor Artificial Plants make their homes beautiful not boring. 1 Stick-on Thermometer Strip, Eliminate your worry of not confirming the heating temperature Mini Sized- Fully submersible compact betta fish heater Gift with 2PCS Aquarium Decor Artificial Plant. Specific perfect for mini aquarium under 5 gal/20L.for all shapes and materials fish tanks, whether it is glass or plastic, all can be used. ZEETOON Mini Heater provide a constant warm for your pet fish to stay healthy, suitable both for fresh and salt water. intelligent temperature regulate, very easy to use. Smart Control: Adopted intelligent circuit board, with a precise sensing probe and thermostat heating system. Unlike other conventional heaters, need you to manually adjust the temperature. Our Smart Aquarium Heater just plug the power cable then it will work. It works will automatically turn on/off to achieve the setting temperature constantly and stably 73ºF-82ºF(25℃-28℃), Energy-saving life, you will be at your fingertips! Smart Thermostat: ZEETOON Mini Heater different from a manually adjusted heater. Our heater automatic temperature regulate on 73ºF-82ºF(25℃-28℃) , no need to set. Prevent electric shock and burns. Keep you and your family safe. Position it near a strong water flow for whole aquarium are in the same temperature. The outlet of filter is ideal. When there is a heater in the fish thak, do not put your hand in to the water High Quality: Made by heat resistant ABS housing, sandy quartz filler and MCH Alumina ceramic heating system, anti explosion & cracking, it is scald-preventing for your pets and safe operation for you, safer and more stable to use. This product have certificated by CE, ROHS, FCC, UL certifications. We provide 1 year quality assurance for this product, we will provide replacement items for any product problems within 1 year after your purchase it.
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YOFOTHS Aquarium Heater 10W/25W/50W/100W/200W, Small Fish Tank Heater with Built-in Thermometer, Temperature Adjustable Mini Tank Heater for 5/10/20 Gallon, External Temperature Controller
45 Reviews🐟【25Watts Small Fish Tank Heater】 This Aquarium Heater is suitable for 1-5 gallons tanks, Mini size can well fit your mini tanks. Voltage 110-120V, power cord length is 52”, Suitable for freshwater and saltwater. Meet the growth temperature for turtle, Fighting fish,Guppy, Goldfish, Neon Tetra, Gourami, Peaceful Betta, Pterophyllum, Dwarf Gourami, Pterophyllum Scalare, Betta Smaragdina, Koi, Corydoras, Anabantoidei, Paradise Fish, Clownfish,swordtail…. 🐟【Precise and Constant Temperature】An intelligent IC chip controls the heater’s temperature. The temperature accuracy is 1℉. The fish heater will automatically start heating when the water temperature is lower than the set values and stop heating when the water temperature reaches the target. 🐟【External Temperature Controller】Adjust the temperature from 64℉ to 93℉, This submersible heater is adjusted by an external controller, which you can mount on the outside edge of the tank. It’s convenient and safe for you to set the temperature, No need to put your hands in the water to adjust the Aquarium Heater temperature. 🐟【Prevent for Over Heating and Out of Water Protection】 The heater will cut off power and stop heating automatically when the fish tank heater is out of water or the water temperature is over 95F. ‘E1’ error code will be shown. The function recovered when the heater is 100% immersed in water or the water temperature goes down to below 93℉. 🐟【Notice】During its heating time, heater must be 100% immersed into the water. Please unplug the power supply when cleaning the fish tank or aquarium water changes. Heater rod is suitable for people over 16 years of age. Children or minors should be under adult guidance or supervision to use.
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Is a 25 watt heater for 5 gallon tank?
On the market, there are 7.5w, 10w, 15w, 25w aquarium heaters—all indicating that they will work just fine for a tank 5 gallons and under.Apr 26, 2022
What watt aquarium heater do I need?
A good rule of thumb for aquarium heaters is 5 watts per gallon for aquariums 55 gallons or smaller, and 3 watts per gallon for those over 60 gallons. Use a larger size or a second heater if your aquarium is in an especially cold room or is located on an exterior wall or near an outside door.
Can an aquarium heater be too powerful?
No if the heater is meant for a bigger sized tank than used in it will not affect anything in a bad way. As long as the heater is still able to be 100% submerged in water your fine.Jul 10, 2021
How many watts does a 40 gallon aquarium heater use?
As you have a 40 gallon aquarium you need 4 heaters (4x10gallons) at 25 watts to heat the water. So a 100 watt heater is ideal. Another guide is 1 watt for every litre of water. This calculates a larger heater - but at least you know that you will be covered.
What size aquarium is 100 watt heater for?
Small Size 100W Aquarium Heater fits for 5-30 Gallon. Temperature range: 65°F~93°F（17°C~34°C）, LED display Fahrenheit °F,power cord length 43.3inch/110cm.
What wattage heater do I need for a 40 gallon tank?
As you have a 40 gallon aquarium you need 4 heaters (4x10gallons) at 25 watts to heat the water. So a 100 watt heater is ideal.
Is a 300 watt heater good for a 55 gallon tank?
The size of your tank is vital for choosing an appropriate heater for your tank. As a rough estimate, you use between 2.5 and 5 watts per gallon of water. For a 55-gallon tank, I’d recommend using between a 150-watt and 300-watt heater.
Can a heater be too big for a tank?
No if the heater is meant for a bigger sized tank than used in it will not affect anything in a bad way. As long as the heater is still able to be 100% submerged in water your fine.Jul 10, 2021
Is a 50 watt heater good for a 30 gallon tank?
Unless your ambient room temperature is as high as your tank temperature then I would say no, a 50w heater is undersized for your 30g tank.Dec 29, 2021
Is a 50 watt heater good for a 30 gallon tank?
Unless your ambient room temperature is as high as your tank temperature then I would say no, a 50w heater is undersized for your 30g tank.Dec 29, 2021
What size tank is a 50 watt heater for?
The 50 watt option will be a good aquarium heater for a small 5-10 gallon tanks.
How many watts do you need for a 30 gallon tank?
It’s generally recommended to use 2.5 to 5 watts per gallon of water. So, for a 30-gallon aquarium, you’ll need a heating device with a wattage of 75 W to 150 W.Jun 1, 2020
How many watts do you need for a 29 gallon tank?
For example, if you have a 29-gallon tank under those conditions, the suggested heater size is 100 watts.
Is a 25w heater enough for 5 gallon tank?
On the market, there are 7.5w, 10w, 15w, 25w aquarium heaters—all indicating that they will work just fine for a tank 5 gallons and under.Apr 26, 2022
Is a 50 watt heater OK for a 5 gallon tank?
Why Should You Use a 50 Watt Heater? If your tank is 5 gallons then it’s entirely possible to use a smaller heater such as 25 watts. And there’s nothing wrong with that. However, a 50-watt heater is going to be able to heat a tank a lot better and a lot quicker than a 25-watt heater.