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20 Best Heater For Saltwater Aquarium (2023 Updated)

A heater for saltwater aquarium is an electrical device that is used to maintain the water temperature in the aquarium at a constant level. Heaters are available in a variety of sizes and wattages to suit the needs of different sized aquariums.

20 Best Heater For Saltwater Aquarium

Product Image Product Name Features Price

Eheim GmbH Jager Aquarium Heater, 300 W

  • 300 W

Finnex 500W+ Titanium Heater Element

  • 500 W

Innovative Marine Helio PTC Smart Reef Aquarium Heater (200 watt)

  • 200 Watt

200 Watt Fluval Vuetech E Series Heater

  • E200 – 200 Watts – Up To 65 Gallons (14″ Long)

Eheim Thermocontrol Aquarium Heater (200 watt)

  • 200 Watt

Marina Betta Submersible Aquarium Heater

  • Creates ideal conditions for bettas to thrive in
  • Made of durable polymer, tougher than glass
  • Automatically reaches set temperature

Marina Submersible Aquarium Heater

  • Works excellently for both fresh and saltwater aquariums
  • Comes with all essential features
  • Easy to install includes bracket with suction cups

Fluval 'M' 200-Watt Submersible Heater

  • ‘m’ 200 W

Aqueon Pro Heater – 150 Watt

  • Power monitor light
  • Shatterproof and nearly indestructible
  • Electronic thermostat for accurate temperature settings

Finnex Hang-On Electronic Controller Aquarium Heater, Titanium Tube

  • Titanium Tube
  • Sleek analog controller
  • HMA 100: 20-30 Gallons

Aqua One Glass Heater, 18.5 cm, 25 W AH25

  • 18.5 cm, 25 W

Tetra HT Aquarium Heater

  • 25 l 25 watt Tetra HT 50 25
  • 60 l 50 watt Tetra HT 75 60
  • 100 l 75 watt Tetra HT 100 100

Via Aqua Quartz Heater – 200 Watt

  • 200 Watts – 50 Gallon Tank

Hidom Aquarium Heater 25W HT-2025 – Upgraded Specification

  • 25 W

Fluval P25 – 25W Submersible Aquarium Heater

  • 25 W

Aquael 75W Ultra Aquarium Heater

  • 75 W

Aquatop Titanium Heater w/Controller

  • Temperature range is 68F – 92F.
  • Ultra tough titanium construct.
  • Easy-to-read temperature indicator.

Aqueon Submersible Heater – 50 Watt

  • 50 Watt

Penn-Plax 200 Watt Cascade Submersible Aquarium Heater

  • 200 Watt
Eheim GmbH Jager Aquarium Heater, 300 W
  • 300 W
Finnex 500W+ Titanium Heater Element
  • 500 W
Innovative Marine Helio PTC Smart Reef Aquarium Heater (200 watt)
  • 200 Watt
200 Watt Fluval Vuetech E Series Heater
  • E200 – 200 Watts – Up To 65 Gallons (14″ Long)
Eheim Thermocontrol Aquarium Heater (200 watt)
  • 200 Watt
Marina Betta Submersible Aquarium Heater
  • Creates ideal conditions for bettas to thrive in
  • Made of durable polymer, tougher than glass
  • Automatically reaches set temperature
Marina Submersible Aquarium Heater
  • Works excellently for both fresh and saltwater aquariums
  • Comes with all essential features
  • Easy to install includes bracket with suction cups
Fluval 'M' 200-Watt Submersible Heater
  • ‘m’ 200 W
Aqueon Pro Heater – 150 Watt
  • Power monitor light
  • Shatterproof and nearly indestructible
  • Electronic thermostat for accurate temperature settings
Finnex Hang-On Electronic Controller Aquarium Heater, Titanium Tube
  • Titanium Tube
  • Sleek analog controller
  • HMA 100: 20-30 Gallons
Aqua One Glass Heater, 18.5 cm, 25 W AH25
  • 18.5 cm, 25 W
Tetra HT Aquarium Heater
  • 25 l 25 watt Tetra HT 50 25
  • 60 l 50 watt Tetra HT 75 60
  • 100 l 75 watt Tetra HT 100 100
Via Aqua Quartz Heater – 200 Watt
  • 200 Watts – 50 Gallon Tank
Hidom Aquarium Heater 25W HT-2025 – Upgraded Specification
  • 25 W
Fluval P25 – 25W Submersible Aquarium Heater
  • 25 W
Aquael 75W Ultra Aquarium Heater
  • 75 W
Aquatop Titanium Heater w/Controller
  • Temperature range is 68F – 92F.
  • Ultra tough titanium construct.
  • Easy-to-read temperature indicator.
Aqueon Submersible Heater – 50 Watt
  • 50 Watt
Penn-Plax 200 Watt Cascade Submersible Aquarium Heater
  • 200 Watt

1. Eheim GmbH Jager Aquarium Heater, 300 W

Eheim GmbH Jager Aquarium Heater, 300 W

  • 300 W

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Sold By Price
Amazon.com
eBay
PetSmart
Chewy.com

Product Details

Specifications

Details
Is Discontinued By Manufacturer No
Country of Origin USA
Item Package Dimensions L x W x H 23.23 x 6.06 x 2.99 inches
Item Dimensions LxWxH 1.42 x 19.92 inches
Target Audience Keyword Fish

Reviews From Real Customers

M.P.
ICReefer

2. Finnex 500W+ Titanium Heater Element

Finnex 500W+ Titanium Heater Element

  • 500 W

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Sold By Price
Amazon.com – Seller
eBay – premiumaq
SaltwaterAquarium.com
Premium Aquatics

Product Details

Specifications

Details
Is Discontinued By Manufacturer No
Product Dimensions 13.5 x 1 x 1 inches; 1.23 Pounds
Item Package Dimensions L x W x H 16.69 x 3.15 x 2.52 inches
Item Dimensions LxWxH 13.5 x 1 x 1 inches
Target Audience Keyword Reptiles, Fish; insects; reptiles, Insects, Fish

Reviews From Real Customers

Medictrode
Ian B

3. Innovative Marine Helio PTC Smart Reef Aquarium Heater (200 watt)

Innovative Marine Helio PTC Smart Reef Aquarium Heater (200 watt)

  • 200 Watt

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Sold By Price
Amazon.com – Seller
Premium Aquatics

Product Details

Specifications

Details
Factory Preset Temperature 77°F
Factory Preset Low Alarm 74°F
Factory Preset High Alarm 80°F
Temp Set Range 59° – 95°F
Low Alarm General Range 57° – 93°F

Reviews From Real Customers

Becca
Giovanni
Walther

4. 200 Watt Fluval Vuetech E Series Heater

200 Watt Fluval Vuetech E Series Heater

  • E200 – 200 Watts – Up To 65 Gallons (14″ Long)

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Sold By Price
Amazon.com
eBay
Miscota.com
fruugo.com

Product Details

Specifications

Details
Product Dimensions 1.8 x 3.3 x 17 inches
Country of Origin Italy
Is Discontinued By Manufacturer No
Style E200
Voltage 230 Volts

Reviews From Real Customers

jarhead00
Boris
dmassarone1

5. Eheim Thermocontrol Aquarium Heater (200 watt)

Eheim Thermocontrol Aquarium Heater (200 watt)

  • 200 Watt

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Amazon.com
eBay
Walmart
Chewy.com

Product Details

Specifications

Details
Package Dimensions 24.2 x 4 x 3.4 inches; 1.3 Pounds
Country of Origin Germany
Item Package Dimensions L x W x H 24.2 x 4 x 3.4 inches
Target Audience Keyword Fish
Directions USE AS DIRECTED ON PACKAGING

Reviews From Real Customers

saltwateraquarium.com
484fenderbender
fishgeekut9

6. Marina Betta Submersible Aquarium Heater

Marina Betta Submersible Aquarium Heater

  • Creates ideal conditions for bettas to thrive in
  • Made of durable polymer, tougher than glass
  • Automatically reaches set temperature
  • Easy to install using suction cups
  • For aquariums up to 5 litres (1.5 US Gal)

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Amazon
eBay
Walmart
Chewy.com

Product Details

Specifications

Details
Manufacturer Part Number 015561111829
Product Name Betta Submersible Heater
Product Type Aquarium Heater
Animal Type Fish
Animal Breed Betta

Reviews From Real Customers

thackaringa
SirAhabMcCreamsicle
Milo

7. Marina Submersible Aquarium Heater

Marina Submersible Aquarium Heater

  • Works excellently for both fresh and saltwater aquariums
  • Comes with all essential features
  • Easy to install includes bracket with suction cups
  • Water proof sealing

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Sold By Price
Amazon
eBay
Miscota.com
PetMountain.com

Product Details

Specifications

Details
Weight 0.05 oz

Reviews From Real Customers

Dee
billyll
organrecords

8. Fluval ‘M’ 200-Watt Submersible Heater

Fluval 'M' 200-Watt Submersible Heater

  • ‘m’ 200 W

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Sold By Price
Amazon
eBay
Walmart – Kens Fish Inc.
PetSmart

Product Details

Specifications

Details
MODEL Item # M50 A781
Wattage 50 W
Dimensions L x W x H

Reviews From Real Customers

petco.com
police86
LisainNM

9. Aqueon Pro Heater – 150 Watt

Aqueon Pro Heater - 150 Watt

  • Power monitor light
  • Shatterproof and nearly indestructible
  • Electronic thermostat for accurate temperature settings
  • Fully submersible
  • For fresh or saltwater aquariums

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Sold By Price
Amazon
eBay
Petco.com
LiveAquaria.com

Product Details

Specifications

Details
Weight 0.75 lb

Reviews From Real Customers

corycatkeeper42
xidbobMoXoMdodbix
C M E

10. Finnex Hang-On Electronic Controller Aquarium Heater, Titanium Tube

Finnex Hang-On Electronic Controller Aquarium Heater, Titanium Tube

  • Titanium Tube
  • Sleek analog controller
  • HMA 100: 20-30 Gallons

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Sold By Price
Amazon
Sears – ErgodE

Product Details

Specifications

Details
Product Dimensions 6.6 x 1.0 x 1.0 inches

Reviews From Real Customers

nichgar84

11. Aqua One Glass Heater, 18.5 cm, 25 W AH25

Aqua One Glass Heater, 18.5 cm, 25 W AH25

  • 18.5 cm, 25 W

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Sold By Price
Amazon
bigamart.com

Product Details

Specifications

Details
Manufacturer Part Number AH25
Product Name Audio/Video Y-Adapter Cable
Packaged Quantity 1
Product Type Audio Cable
Number of Ways 2-way

Reviews From Real Customers

bumnut59
tbra8303
Rebecca

12. Tetra HT Aquarium Heater

Tetra HT Aquarium Heater

  • 25 l 25 watt Tetra HT 50 25
  • 60 l 50 watt Tetra HT 75 60
  • 100 l 75 watt Tetra HT 100 100
  • 150 l 100 watt Tetra HT 150 150
  • 225 l 150 watt Tetra HT 200 225

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Sold By Price
Amazon
eBay – animal-and-fish
Vivapets

Product Details

Reviews From Real Customers

Reviewed by Swell UK customer
greenpixie4

13. Via Aqua Quartz Heater – 200 Watt

Via Aqua Quartz Heater - 200 Watt

  • 200 Watts – 50 Gallon Tank

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Sold By Price
Amazon
eBay
Walmart – drugsupplystore.com
PetMountain.com

Product Details

Specifications

Details
Weight 0.72 lb

Reviews From Real Customers

B.K.
adf2679
D.S.

14. Hidom Aquarium Heater 25W HT-2025 – Upgraded Specification

Hidom Aquarium Heater 25W HT-2025 - Upgraded Specification

  • 25 W

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Sold By Price
Amazon
eBay – finest-filters1
NxDeals.com

Product Details

Reviews From Real Customers

norman_lyons
blackswingrider55
griwis.hy1sywajf

15. Fluval P25 – 25W Submersible Aquarium Heater

Fluval P25 - 25W Submersible Aquarium Heater

  • 25 W

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Amazon
eBay
PetSmart
Miscota.com

Product Details

Specifications

Details
Primary Brand Fluval
Length 2.1 IN

Reviews From Real Customers

Fins feathers and fur
Michael En
LJMMD

16. Aquael 75W Ultra Aquarium Heater

Aquael 75W Ultra Aquarium Heater

  • 75 W

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Sold By Price
Amazon
eBay – saltwateraq
Walmart – Aquael USA
inTank

Product Details

Specifications

Details
Length 8.2″
Recommended tank size 16-26 gal
Power 75W

Reviews From Real Customers

Gordon
sparkle_rm
youngal1952

17. Aquatop Titanium Heater w/Controller

Aquatop Titanium Heater w/Controller

  • Temperature range is 68F – 92F.
  • Ultra tough titanium construct.
  • Easy-to-read temperature indicator.
  • Remote sensor for accurate temperatures.
  • For fresh or saltwater systems.

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Sold By Price
Amazon
eBay
Walmart – Aquatop
Sears – ErgodE

Product Details

Specifications

Details
Is Discontinued By Manufacturer No
Product Dimensions 12 x 3 x 4 inches; 15.84 Ounces
Item Package Dimensions L x W x H 13.11 x 3.07 x 2.01 inches
Item Dimensions LxWxH 12 x 3 x 4 inches
Target Audience Keyword Fish

Reviews From Real Customers

Robert V.
ivtq2635
Lola

18. Aqueon Submersible Heater – 50 Watt

Aqueon Submersible Heater - 50 Watt

  • 50 Watt

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Sold By Price
Amazon
eBay
the Pet Stop

Product Details

Specifications

Details
Is Discontinued By Manufacturer ‏ ‎ No
Product Dimensions ‏ ‎ 3.8 x 11 x 1.5 inches; 8 Ounces
Item Package Dimensions L x W x H ‎9.8 x 3.9 x 1.6 inches
Item Dimensions LxWxH ‎3.8 x 11 x 1.5 inches
Target Audience Keyword ‎Fish

Reviews From Real Customers

dalton.f
Weiand
euphoniumism

19. Penn-Plax 200 Watt Cascade Submersible Aquarium Heater

Penn-Plax 200 Watt Cascade Submersible Aquarium Heater

  • 200 Watt

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Amazon
eBay
Chewy.com
PetMountain.com

Product Details

Specifications

Details
Fish Type All Fish Types
Maximum Tank Capacity 55 gal
Maximum Temperature 89 F
Minimum Tank Capacity 30 gal
Minimum Temperature 68 F

Reviews From Real Customers

brandytts
turtlebrat
Marvel

20. Hygger 925 Quartz Aquarium Heater with IC Temperature Controller, 300 W(30-60 Gallon)

Hygger 925 Quartz Aquarium Heater with IC Temperature Controller, 300 W(30-60 Gallon)

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Amazon
petnannystore

Product Details

Reviews From Real Customers

justabrian
johnt3796
naomiclark1

Conclusion

There are many types of aquarium heaters on the market, and choosing the right one can be tricky. Saltwater aquariums require a heater that can maintain a consistent temperature, as fluctuations can be detrimental to the health of the inhabitants.

A good rule of thumb is to choose a heater that is rated for at least twice the capacity of your aquarium.

When choosing a heater for your saltwater aquarium, it is important to consider the size of the tank, the type of fish or other inhabitants, and the desired water temperature. There are many different types of heaters on the market, so it is important to do your research to find the best one for your needs.

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