8 Best Aquarium Heaters | March 2017

We spent 25 hours on research, videography, and editing, to review the top choices for this wiki. When it comes to taking care of your fish, environmental maintenance is one of the most important considerations. For that reason, you'll need one of these reliable aquarium heaters to help you keep an eye on your piscine companions. Many function in both fresh and saltwater tanks, can shut off automatically, and can automatically change the water temperature when it fluctuates. Skip to the best aquarium heater on Amazon.
8 Best Aquarium Heaters | March 2017

Overall Rank: 4
Best Mid-Range
Overall Rank: 1
Best High-End
Overall Rank: 7
Best Inexpensive
Good for handling tanks of up to 55 gallons in capacity, the Marineland Precision ML90652 combines the use of both its adjustable, incremental heating dial as well as its high-visibility temperature display to ensure the longevity and comfort of all of your fish.
Durability describes the Xcellent Global PT027S, thanks to its high-purity, explosion-proof glass construction, which minimizes its chances for becoming brittle or rusting over time. Its thermal conductor is also made from fast-cooling and heat-resistant black gold.
With its fully shock-resistant glass jacket and versatile design, the EHeim Jager not only improves the efficiency of your tank's heat distribution process, but it can withstand use in either fresh or saltwater environments. It's also available in 8 different sizes.
The Milocos 300W Submersible is constructed with sturdy quartz glass tubing and heat-resistant plastic sheathing. Leveraging its smart induction technology, it will increase the temperature of your tank water should it fall 3.6 degrees Fahrenheit below your preset value.
  • built-in overheat protection
  • ip 68 double sealing
  • instructions are rather confusing
Brand Milocos
Model pending
Weight 1.1 pounds
Suitable for both marine and tropical fish and built to maximize the space within your tank's interior, the innovative Hydor ETH T08203 installs externally and vertically into the return lines of canister filters or sumps. Its built-in clamps also allow for easy plumbing.
  • durable plastic casing
  • extra-long cord
  • it's a bit on the pricey side
Brand Hydor
Model T08203
Weight 16 ounces
At its heart, the Aqueon Pro 250 features a resilient aluminum core that is designed to maintain steady temperatures between 68 and 88 degrees Fahrenheit. Its electronic thermostat will automatically shut the unit off when removed from your tank water.
  • heater is shatterproof
  • easy-to-use temperature control knob
  • installs vertically or horizontally
Brand Aqueon
Model 100106109
Weight 16 ounces
The Fluval A774 includes a digital microprocessor and 2 thermal sensors for sampling tank water directly through the glass of the device's heater tube, which greatly improves its level of accuracy and reliability over that of its bi-metallic strip thermostat counterparts.
  • lcd readout changes color
  • integrated fish guard
  • sleek and slender design
Brand Fluval
Model A774
Weight 1 pounds
In a class all of its own, the Finnex HC-0810M offers built-in precision memory control that allows you to save your preset temperature in the event of a power outage, while its dual relay functionality will disable the heating element in case of potential overheats.
  • audio alert system
  • intuitive control box
  • supports up to 265-gallon aquariums
Brand Finnex
Model TH-800S/HC810M
Weight 2.4 pounds
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Last updated: 03/25/2017 | Authorship Information