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50 Watt Aquarium Heaters &

75 Watt Aquarium Heaters

The heaters in this category are 50W & 75W and are appropriate for 16 gallon to 25 gallon aquariums in normal circumstances if only one heater is used. Please take a look at our Aquarium Heater Overview Article for a more information.
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Tetra GloFish 50 Watt Submersible Heater Tetra GloFish 50 Watt Submersible Heater

Product Code: RTE78403
The Tetra GloFish 50 Watt Submersible Heater is designed to keep your aquatic fish comfortable, with an electronic thermostat that automatically maintains a consistent water temperature of 78 degrees and prevents overheating, extending heater life. An indicator light lets you know when the water is heating (red light) and when it reaches the proper temperature (green light).

Inside, silicon carbide crystals improve heat distribution and transfer. The strong glass tube is heat and shock resistant. This submersible heater is easy to use just attach to the inside of the aquarium wall using the suction cup (included) in an area with good water circulation. For aquariums up to 10 gallons.

Features:

  • STEADY TEMPERATURE: Electronic thermostat keeps water at a consistent 78 degrees
  • INDICATOR LIGHT: The red light shows when water is heating; green indicates that the heater is on standby.
  • DIMENSIONS: 6" x 1.5"
  • EASY TO USE: Just attach to an aquarium wall the suction cup securely attaches heater to tank.
  • SIZE: Use this 50-watt heater for aquariums up to 10 gallons UL Listed.

Our Price: $13.86
In Stock
Lifegard Aquatics 50 Watt Pre-Set Quartz Glass Aquarium Heater Lifegard Aquatics 50 Watt Pre-Set Quartz Glass Aquarium Heater

Product Code: RRL31559
The Lifegard Aquatics 50 Watt Pre-Set Quartz Glass Aquarium Heater is a submersible heater safe for both freshwater and saltwater tanks from 10 to 20 gallons.

Our Price: $15.09
(Out of Stock)
Oase HeatUp 50 Watt Aquarium Heater Oase HeatUp 50 Watt Aquarium Heater

Product Code: RBO33799
The Oase HeatUp 50 Watt Aquarium Heater features uniform temperature level thanks to the patented bi-metal technology. Recommended for tanks up to 15 gallons. 8" long.

Our Price: $23.99
(Out of Stock)
Lifegard Aquatics 50 Watt Adjustable Quartz Glass Aquarium Heater Lifegard Aquatics 50 Watt Adjustable Quartz Glass Aquarium Heater

Product Code: RRL31551
The Lifegard Aquatics 50 Watt Adjustable Quartz Glass Aquarium Heater is a submersible heater safe for both freshwater and saltwater tanks 10 gallons to 20 gallons.

Our Price: $24.12
In Stock
AquaEl 50W Platinum Aquarium Heater AquaEl 50W Platinum Aquarium Heater

Product Code: RAE38005
The AquaEl 50W Platinum Aquarium Heater is an innovative glass heater. It's equipped with a high-precision electronic thermostat. Temperatures can be set in the range between 68 and 94F and are maintained with an accuracy of 0.8 C (+/-0.4 C).

The heater boasts the one touch system for intuitive temperature adjustment, a ceramic heat sink, and an embedded electronic thermometer. Since the thermostat is fully electronically controlled, these heaters, unlike other commercially available products, do not have any mechanical contacts or other wear-prone moveable parts.

Features:

  • 50 Watts
  • 9.1 inches long
  • For tanks from 4 to 13 gallons
  • Suitable for fresh and saltwater use
  • Suction cups included
  • Temperature range 68 to 94 F. Solid state thermostat.
  • Each heater undergoes computer-assisted testing and calibration to ensure precision and safety

Our Price: $26.90
In Stock
AquaTop 50W Model GH-50 Submersible Heater AquaTop 50W Model GH-50 Submersible Heater

Product Code: RAT01937
The AquaTop 50W Model GH-50 Submersible Heater will maintain a constant and stable temperature. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 13 gallons.

Our Price: $26.99
(Out of Stock)
AquaEl 75W Platinum Aquarium Heater AquaEl 75W Platinum Aquarium Heater

Product Code: RAE38006
The AquaEl 75W Platinum Aquarium Heater is an innovative glass heater. It's equipped with a high-precision electronic thermostat. Temperatures can be set in the range between 68 and 94F and are maintained with an accuracy of 0.8 C (+/-0.4 C).

The heater boasts the one touch system for intuitive temperature adjustment, a ceramic heat sink, and an embedded electronic thermometer. Since the thermostat is fully electronically controlled, these heaters, unlike other commercially available products, do not have any mechanical contacts or other wear-prone moveable parts.

Features:

  • 75 Watts
  • 9.1 inches long
  • For tanks from 9 to 20 gallons
  • Suitable for fresh and saltwater use
  • Suction cups included
  • Temperature range 68 to 94 F. Solid state thermostat.
  • Each heater undergoes computer-assisted testing and calibration to ensure precision and safety

Our Price: $27.33
In Stock
Hydor Theo 50 Watt Aquarium Heater Hydor Theo 50 Watt Aquarium Heater

Product Code: RHY19340
Hydor Theo 50 Watt Aquarium Heater is a fully submersible, shatter-proof glass aquarium heater.

Our Price: $27.36
In Stock
Marineland Precision 75 Watt Submersible Heater Marineland Precision 75 Watt Submersible Heater

Product Code: RML90649
The Marineland Precision 75 Watt Submersible Heater is perfect for freshwater and marine aquariums up to 20 gallons. Features a thermal safety switch to prevent heater failure during operation.

Our Price: $27.44
In Stock
AquaTop 75W Model GH-75 Submersible Heater AquaTop 75W Model GH-75 Submersible Heater

Product Code: RAT01938
The AquaTop 75W Model GH-75 Submersible Heater will maintain a constant and stable temperature. This fully submersible glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up to 20 gallons.

Our Price: $27.99
In Stock
Fluval T50 50W Fully Electronic Aquarium Heater Fluval T50 50W Fully Electronic Aquarium Heater

Product Code: RHG14880
Fluval T50 50W Fully Electronic Aquarium Heater combines electronic accuracy, reliable monitoring, and multiple safety features to easily maintain desired aquarium water temperatures. The 360 indicator light ring displays heat mode clearly from any angle, while a convenient large grip dial allows users to adjust the water temperature with ease. In absence of water, the T50 Heater automatically cuts power to prevent overheating, while a heater guard provides additional peace-of-mind protection.

Features:

  • 50 Watts
  • 10.5" long
  • For aquariums up to 15 Gallons
  • 24/7 monitoring regulates temperature and avoids large, unsafe fluctuations
  • In absence of water, the Heater automatically cuts power to prevent overheating
  • Heater Guard provides additional protection against breakage
  • Large grip dial easily adjusts water temperature from 72-90˚F / 22-32˚C
  • Fully submersible design allows for placement anywhere in aquarium either vertically or horizontally
  • For freshwater aquariums only

Our Price: $45.99
In Stock
AquaEl 50W Ultra Aquarium Heater AquaEl 50W Ultra Aquarium Heater

Product Code: RAE00046
The AquaEl 50W Ultra Aquarium Heater is appropriate for aquariums from 4 to 13 gallons. They are the only heaters on the market with solid state thermostats. This means they have no moving parts that can break and cause a calamitous aquarium failure due to the heater not turning off.

The thermostat operates with an exceptional precision (+/- 0.25 C) to maintain a constant temperature in the tank. The other heaters on the market have normal temperature swings of a couple degrees. The constant temperature ensures that even the most sensitive of aquarium animals will stay comfortable at all times.

Features:

  • 50 Watts
  • 6.42 inches long
  • For tanks from 4 to 13 gallons
  • Suitable for fresh and saltwater use
  • Suction cups included
  • Temperature range 68 to 94 F. Solid state thermostat.
  • Near constant temperature
  • Virtually unbreakable
  • Built-in overheat protection
  • Also displays the current water temperature

Our Price: $59.39
In Stock