10 Best 100w Aquarium Heater

Updated on: September 2021

Best 100w Aquarium Heater in 2021


Orlushy Submersible Aquarium Heater 100W for Marine Reef Fish Tank Sump

Orlushy Submersible Aquarium Heater 100W for Marine Reef Fish Tank Sump
BESTSELLER NO. 1 in 2021

Aqueon Glass Submersible Adjustable Heaters

Aqueon Glass Submersible Adjustable Heaters
BESTSELLER NO. 2 in 2021
  • Precise temperature setting to 1-degree F (68-88 degrees F)
  • Recommended for aquariums up to 40-Gallons
  • Shatter-resistant construction, fully submersible
  • LED light turns on when aquarium water is being heated; Automatic safety shut off and overheat protection
  • Lifetime Limited Warranty

Fluval M 100-Watt Submersible Heater

Fluval M 100-Watt Submersible Heater
BESTSELLER NO. 3 in 2021
  • Built in reflective technology mirrors the surrounding colors, making the heater blend into your aquarium environment
  • Shock resistant Borosilicate glass; High density ceramic heat sick
  • Slim profile tube for easy placement; Easy to install
  • Exceptional performance and unsurpassed reliability
  • Suitable for aquariums up to 30 gallons; 100 watts; 3 year warranty

Mylivell Aquarium Heater Submersible Fish Tank Water Heater Thermostat-100W

Mylivell Aquarium Heater Submersible Fish Tank Water Heater Thermostat-100W
BESTSELLER NO. 4 in 2021
  • High Quality: Aquarium heater made of high quality quartz glass, double seal material , advanced design, ensures safe operation.
  • Adjustable Temperature: The temperature of the fish tank heater can be adjusted automatically. Temperature setting range: 20°~34°C(65° F - 93° F), and the display is easy to read.
  • Fully Submersible. Power: 100W. Suggested water volume: 20 gal.
  • Both suiting for fresh or saltwater aquariums, provide a constant warm environment for your tropical fish to stay healthy.
  • Convenient and Safe: Our aquarium heater thermostat has two suction cups for attachment to the fish tank. The polarized plug prevents electrical shock.

Aqueon 100106252 Preset Heater,Black, 100W

Aqueon 100106252 Preset Heater,Black, 100W
BESTSELLER NO. 5 in 2021
  • Preset to 78 degrees, appropriate for most tropical fish.
  • Fully submersible, shatter-resistant construction
  • Automatic safety shut-off avoids overheating and damage
  • LED indicator light displays when actively heating
  • 1 year warranty
  • 100 watt is recommended for 20 and 30 gallon aquariums

UPMCT Aquarium Heater, 100W Submersible Fish Tank Heater with Thermometer Strip Adjust Knob Thermostat, Suitable for 15 to 25 Gallons (100W)

UPMCT Aquarium Heater, 100W Submersible Fish Tank Heater with Thermometer Strip Adjust Knob Thermostat, Suitable for 15 to 25 Gallons (100W)
BESTSELLER NO. 6 in 2021
  • 【Quality Assurance】High-purity thick quartz explosion-proof crystal tube is used on the surface, there will be no rust spots, causing heavy metal damage to the fish. The double sealing waterproof can also prevent electric leakage, the fish will not be electrocuted due to leakage of the product. A heating guard with a high suction cup is provided as a gift, and the fish will not be burnt due to the fish touching the aquarium heater. Keep your fish live in a carefree warmth at any time!
  • 【Wide Range Of Temperature Adjustment】Bimetallic material, precise temperature control. Adjustable temperature ranges from 68°F to 94°F(20°C - 34°C), and you can choose the coziest temperature for your fish. (The suitable temperature range for most tropical fish is 76°F to 80°F/24°C -27°C ). At the same time, a temperature sticker is attached to the fish tank, allowing you to intuitively detect temperature changes at any time, so that you can use it with more confidence.
  • 【Suitable For 5-85 Gallon Tanks】50W aquarium heater is suitable for a 5 to 15 gallon tank, 100W aquarium heater is suitable for a 15 to 25 gallon tank. 300W aquarium heater is suitable for a 50 to 85 gallon tank. It is suitable for fresh water and sea water! Please confirm the wattage, tank capacity and other details before purchasing to select the aquarium heater with appropriate wattage.
  • 【Easy To Install】Can be installed vertically or horizontally, but the aquarium heater must be completely submerged in water. We also recommend placing it near a strong water flow, where the outlet of the mains filter is ideal, so that the temperature of the entire aquarium is the same.
  • 【How To Use】Immerse the aquarium heater completely into the aquarium or tank, wait for 10-15 minutes to let the internal temperature adapt to the actual water temperature in the tank. Then twist the thermostat knob, adjust the temperature to 68°-94°F and then connect to the power supply.

EHEIM Jager Aquarium Thermostat Heater 300W

EHEIM Jager Aquarium Thermostat Heater 300W
BESTSELLER NO. 7 in 2021
  • Fully submersible
  • Thermo safey control protects against running dry
  • Will automatically turn off when water level dips too low
  • TruTemp dial recalibrates the heater for precise temperature regulation
  • Made of shock resistant and shatter proof glass for fresh or marine water
  • On/Off indicator light for at-a-glance monitoring

boxtech Submersible Aquarium Heater 50W/100W/300W - Explosion-Proof Automatic Digital Control Water Fish Tank Thermostat, Heat-Resistant Quartz Made for 5-80 Gallon

boxtech Submersible Aquarium Heater 50W/100W/300W - Explosion-Proof Automatic Digital Control Water Fish Tank Thermostat, Heat-Resistant Quartz Made for 5-80 Gallon
BESTSELLER NO. 8 in 2021
  • 🐟【Pls Notice】Before you clean the aquarium or change water, pls must cut off the heater power, after 10 minute cooling then take out the heater.
  • 🐟【For 10 - 30 Gallon Fish Tank】Boxtech 100W aquarium heaters suit for 10 - 30 Gallon fish tank. Voltage:110V, power cord is 4.59ft, please choose the right wattage aquarium heater according to your tank size.
  • 🐟【Temperature Control】Design with External Temperature Controller, Temperature Range is 20℃ -32℃(68ºF-90ºF), when water temperature achieve the setting temperature, heater will automatically stop heating, when water temperature is lower than the setting temperature, heater will automatically start heating. 
  • 🐟【Maximum depth】Submersible Aquarium Heater Max deep water immersion 50CM(20 inch/1.7 FT).Fahrenheit degrees =1.8 * Celsius degrees +32. Safety Protection: Made of heat-resistant milky quartz Glass and UL-Approved Power Cord, Controller IPX4, Heater IPX8 that make it pretty shatter-proof and Explosion-proof and prevents electricity leakage. It is more safety for your love fish.
  • 🐟【Submersible in water fully】Stick the heater horizontally onto the tank side near the water intake or on the way of water flow. Keep the aquarium heater fully submerged in water.

HITOP 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Thermometer (100W-grey)

HITOP 50W 100W 300W Adjustable Aquarium Heater, Submersible Fish Tank Heater Thermostat with Thermometer (100W-grey)
BESTSELLER NO. 9 in 2021
  • 🐟 Thickened Glass: 2mm thickened quartz glass, 33% thicker than 1.5mm normal aquarium heaters, much safer for human and your lovely fishes, your pets will no longer fear the winter.
  • 🐟 Automatic Constant Temperature Function: this fish heater, adjustable temperature 68 ~ 93 °F, will shut off automatically when the temperature is reached, no extra adjustment is required.
  • 🐟 Quick and easy installation, submersible fish tank heater, vertical or horizontal placement using suction cups. 1 extra powerful suction cups as your backup (total 3).
  • 🐟 100W aquarium heater, length 9.5-inch, power cord 4.9ft, designed for small fish tanks, recommended for aquariums 10 to 30 Gallons.
  • 🐟 Bonus a stick-on thermometer, no need to buy another thermometer, 24-Hour Professional After-sales Service.

Aqueon Pro Series Aquarium Heater, 100W, Black

Aqueon Pro Series Aquarium Heater, 100W, Black
BESTSELLER NO. 10 in 2021
  • Adjustable heat setting 68 to 88°F, Electronic Thermostat accurate to +/- 1°
  • Shatterproof and nearly indestructible
  • Fully submersible; Auto Shut-Off when over-heats, resets when it cools down
  • LED light is always on: red when heating, green when not heating
  • Limited Lifetime warranty

The Top Places to Have a Birthday Party in Knoxville, TN

A thoughtful list of animal and nature related birthday paty venues in the Knoxville, TN area.: Knoxville Zoo, Wildlife Wonders, Ijams, Ripley's Aquarium, petting zoos & pony rides

Does your little one love animals? Would she rather be outside enjoying nature than just about anywhere else? If this sounds like your child, consider one of these nature-inspired birthday options:

The Knoxville Zoo
The News Sentinel Birthday Party Place at the zoo will host an hour and a half party. A zoo party provides admission for 20 guests and an everything-included Saturday or Sunday party hosted by a party consultant for less than $300 (rate depend on zoo membership). You can even arrange for a creature to come to your child's birthday party for an extra fee. For more information of birthday parties or to register for your party and reserve your date, please call 865.637.5331 x352 or email [email protected]

Wildlife Wonders ZOO TO YOU
Bring the jungle to your child's birthday party at home! That's right, ZOO TO YOU is a live, up-close-and-personal animal experience that travels. You can have anything from a few small, cuddly or scaly critters for an hour or a stage show with larger animals to a full petting zoo experience. Over 150 animals are available and they travel to several states including Tennessee, North Carolina, South Carolina, Alabama and Georgia. They offer lots of packages and themes. Programs run around $250 (plus travel) for a 45 minute program. For more information about ZOO TO YOU birthday parties, visit or call 706-348-7279.


Ijams Nature Center
Maybe your child is more interested in enjoying animals in a natural setting. The perfect environmentally-friendly birthday party could be held at Ijams Nature Center in Knoxville. Up to 15 party-goers and their parents can enjoy the lively outdoors in one of the available party themes: "Reptiles and Amphibians," "Insects and Spider," "Birds of Prey," or "The Animals of Ijams." Each party includes a pavilion rental, an educational program, nature walk on a trail and a magnifying glass for each child. Also enjoy ponds, explore meadows, and meet non-releasable animals of the 155-acre park. For more info Contact Kara East at 577-4717 ext. 15 or [email protected]


Ripley's Aquarium of the Smokies
s the most visited aquarium in America, the Ripley's Aquarium is the prefect outing for your sea life loving child's birthday party! Enjoy piranhas in the Tropical Rain Forest, colorful fish in Coral Reef, the aquarium tunnel beneath the Shark Lagoon, horseshoe crabs in Discovery Center, a giant octopus in Gallery of the Seas, and touch a ray in Touch-A-Ray Bay. Although they do not formally host birthday parties, group rates are available. Visit or call: 888-240-1358 or 865-430-8808 ext. 2109

Petting Zoos amp; Pony Rides
Does your child enjoy getting up-close and personal with the animals? Or do you really wish you could giver your child the pony that is at the top of her birthday gift wish list? If so, a trip to a petting zoo or a "Pony Party" might be just what will make your child's animal themed birthday unforgettable. Here is a list of Knoxville area petting zoos and pony ride facilities and phone numbers:

House Mountain Farm Corryton, TN: 865-776-5436;
Weisgarber Stables Knoxville, TN: 865-558-0963;
Deer Farm Pony Rides Sevierville, TN: 865-428-3337;
Tally Ho Pet World Oneida, TN: 423-569-8989;
Wilderness Ranch Inc Butler, TN: 423-768-3030;
Just Fer Paws Gatlinburg, TN: 865-430-3383


Celebrate your child's birthday with an animal themed party he will remember! Knoxville has a number of unique options, one of which is sure to make your child's animal/nature-themed birthday bash one to remember.

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