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300, 400, 500 & 1000 Watt Aquarium Heaters (80 to 325 Gallon Tanks)
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ViaAqua Quartz 300 Watt Aquarium Heater VA-300Q
ViaAqua Quartz 300 Watt Aquarium Heater (VA-300Q)
Our Price: $14.99
In Stock

The ViaAqua Quartz 300 Watt Aquarium Heater is manufactured with high quality, break resistant quartz.

  • 300 Watts. Recommended for tanks up to 80 gallons.
  • Glass construction
  • Fully submersible
  • Suction cups for securing to the aquarium
  • Visible temperature setting
  • For use in fresh and saltwater aquariums
  • 14.5" long (including the control knob)
  • Item # VA-300Q
Hydor Theo 300 Watt Aquarium Heater
Hydor Theo 300 Watt Aquarium Heater
Our Price: $26.89
Sale Price: $20.20
You save $6.69!
In Stock

Hydor Theo 300 Watt Aquarium Heater is a fully submersible, shatter-proof  glass aquarium heater.
  • Maximum security: THEO is shock resistant thanks to the PTC heating element and the shatterproof glass tube
  • Free positioning in aquarium with supplied suction cups
  • Self-limiting: the patented PTC heating system guarantees operation in complete safety because in case of dry running there is no danger for damage
  • Temperature range: 70-94 degrees Fahrenheit
AquaTop 300W Model GH-300 Submersible Heater
AquaTop 300W Model GH-300 Submersible Heater
Our Price: $21.99
In Stock

The AquaTop 300W Model GH-300 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 75 gallons. With the highly visible temperature setting, the GH-300W is easy to set and adjust to the desired temperature with the use of the temperature adjustment knob. This powerful heater also has double insulation and is made from high quality insulated glass.

Features:
  • 300 Watts
  • 14 inches long
  • For tanks up to 75 gallons
  • Suitable for fresh and saltwater use
  • Suction cups included
  • High quality insulated glass construction
Hydor 400 Watt Theo Aquarium Heater
Hydor 400 Watt Theo Aquarium Heater
Our Price: $27.49
Sale Price: $22.49
You save $5.00!
In Stock

Hydor Theo 400 Watt Aquarium Heater is a fully submersible, shatter-proof  glass aquarium heater.
  • Maximum security: THEO is shock resistant thanks to the PTC heating element and the shatterproof glass tube
  • Free positioning in aquarium with supplied suction cups
  • Self-limiting: the patented PTC heating system guarantees operation in complete safety because in case of dry running there is no danger for damage
Aquarium Systems Marineland Visi-therm submersible aquarium heater 300 Watts 300W visitherm
Marineland 300 Watt Visi-Therm Submersible Heater, UL Listed
List Price: $56.69
Our Price: $22.89
You save $33.80!
(Out of Stock)

The Marineland 300 Watt Visi-Therm Submersible Heater is perfect for freshwater and marine aquariums.

Features:
  • UL Listed
  • 15" Tall
  • For aquariums up to 80 gallons
  • Gives precise control to accurately set temp to + or - 1F with every "click"
  • Advanced mounting bracket securely attaches to glass and provides 3 window positions to view temp display from multiple angles
  • LED lights when heater is operating
  • Easy-to-view sliding scale tells the exact temperature setting
  • Double strength glass casing for extra durability
Eheim Aquarium Heater, 300 Watt
Eheim Aquarium Heater, 300 Watt
Our Price: $30.75
In Stock


  • Perfect for freshwater or saltwater use
  • For tanks from 159-264 gallons
  • Fully submersible
  • 19.75" X 1.5"
  • 6 foot double insulated power cord
  • Temperature is adjustable from 65F and 93F with an easy to adjust thermostat
  • TrueTemp dial with readjustment ring allows the user to calibrate the heater for a precise temperature reading
  • Thermo safety control in case the tank runs dry. The heater will shut off when out of the water.
  • On/off indicator light
  • Includes clamp with 2 suction cups
  • Made of shatter-proof glass
ViaAqua NEW LED Titanium Heater 300 Watts
ViaAqua NEW LED Titanium Heater, 300 Watts
Our Price: $45.39
In Stock

The ViaAqua LED Titanium Heater, 300 Watts, is the latest version of ViaAqua Titanium heaters. This version features an LCD temperature readout.

Features:
  • Recommended for tanks up to 80 gallons
  • Titanium heating element
  • Fully submersible
  • Adjustable temperature setting
  • Remote temperature sensor (9" cable)
  • For use in fresh & saltwater
  • Temperature range: 68-93F
Hydor 300W In-Line Heaters, 5/8" Connection
Hydor 300W In-Line Heater, 5/8" Connection
Our Price: $55.95
Sale Price: $49.99
You save $5.96!
In Stock

The Hydor 300W In-Line Heater, 5/8" Connection, is designed for vertical use in most aquarium applications involving water hose of the specified diameter. The ETH must be used in a vertical manner for correct operation. The most common application is for use with canister filter, however the Hydor 300W In-Line Heater is easily adapted for use in almost any situation where heated aquarium water is required, such as with wet/dry sump pumps. It is easily installed by cutting the tubing and connecting the two parts of the tube to each side of the Heater. It heats with high efficiency by means of an internal heat pump system that avoids temperature variations. For use in freshwater and marine aquariums. Fits most canister filters such as the Hydor Professional and the Fluval canisters with the use of a short section of tubing to complete the connection.

Features:
  • 300W
  • 5/8" Connection
  • Must be used in line. Not submersible.
  • Completely safe
  • No danger of damage if the equipment is left running without water for a short period of time
  • Patented heating element made with the exclusive PTC system. The traditional metal resistor coils have been replaced by a special polymer sheet silk- screened with heating ink
  • Setting of temperature controlled by an electronic circuit with indicator light
  • Connectors suitable for any flexible pipe of all external filters
AquaTop D2HT 300 Watt Digital Aquarium Heater
AquaTop D2HT 300 Watt Digital Aquarium Heater
List Price: $64.99
Our Price: $54.99
You save $10.00!
In Stock

The AquaTop D2HT 300 Watt Digital Aquarium Heater is suitable for both freshwater and saltwater applications. It comes equipped with a highly visible dual temperature display, an easy to use temperature control button, and a separately attached temperature sensor, providing a stable temperature environment for aquatic life. The fully submersible features allow for more flexibility in placement. The D2HT Series is also equipped with memory. This means that after a power outage, the heater will resume your preset temperature settings. No need to reset your temperature controls.

Features:
  • LED display
  • The D2HT-300 300 Watt submersible digital aquarium heater is perfect for 75-100 gallon aquariums.
  • The temperature is adjustable from 65F and 93F using the easy to adjust thermostat
  • Built with high impact safety glass and waterproof insulation
  • The design is compact and is only 14.5 inches long
  • Separately attached temperature sensor
  • Suction cups included
  • Will retain temperature setting during a power outage
AquaTop D2HT 450 Watt Digital Aquarium Heater
AquaTop D2HT 450 Watt Digital Aquarium Heater
List Price: $69.99
Our Price: $59.99
You save $10.00!
In Stock

The AquaTop D2HT 450 Watt Digital Aquarium Heater is suitable for both freshwater and saltwater applications. It comes equipped with a highly visible dual temperature display, an easy to use temperature control button, and a separately attached temperature sensor, providing a stable temperature environment for aquatic life. The fully submersible features allow for more flexibility in placement. The D2HT Series is also equipped with memory. This means that after a power outage, the heater will resume your preset temperature settings. No need to reset your temperature controls.

Features:
  • LED display
  • The D2HT-450 450 Watt submersible digital aquarium heater is perfect for 75-100 gallon aquariums.
  • The temperature is adjustable from 65F and 93F using the easy to adjust thermostat
  • Built with high impact safety glass and waterproof insulation
  • The design is compact and is only 15 inches long
  • Separately attached temperature sensor
  • Suction cups included
  • Will retain temperature setting during a power outage
AquaTop 500 Watt Titanium Aquarium Heaters
AquaTop 500 Watt Titanium Aquarium Heaters
Our Price: $69.99
In Stock

NOTE: This heater will not work without a controller.

The AquaTop 500 Watt Titanium Aquarium Heater is corrosion resistant and virtually unbreakable. The corrosion-resistant construction adds to the longevity of the heater by protecting it from damage, especially from saltwater. These titanium heaters are built to last and are effectively indestructible when compared to standard glass aquarium heaters. The heating element provides stable temperatures for aquatic creatures and eliminates harmful temperature swings.
AquaTop 800 Watt Titanium Aquarium Heaters
AquaTop 800 Watt Titanium Aquarium Heaters
Our Price: $89.99
In Stock

NOTE: This heater will not work without a controller.

The AquaTop 800 Watt Titanium Aquarium Heater is corrosion resistant and virtually unbreakable. The corrosion-resistant construction adds to the longevity of the heater by protecting it from damage, especially from saltwater. These titanium heaters are built to last and are effectively indestructible when compared to standard glass aquarium heaters. The heating element provides stable temperatures for aquatic creatures and eliminates harmful temperature swings.
JBJ 300W True Temp Titanium Heating System
JBJ 300W True Temp Titanium Heating System
Our Price: $140.39
Sale Price (price includes free shipping!) $121.49
You save $18.90!
In Stock

The JBJ 300W True Temp Titanium Heating System is the most complete heating system to date with the most advanced features that set it apart as the leading heater for professional hobbyists.

Features:

  • Wattage: 300 Watts
  • Tank Size: 60 - 100 gallons
  • Dimensions: 13.1" X 1.5"
  • Accuracy: +/- 0.5F
  • 100% Digital Operation: The advanced microprocessor constantly reads and displays the correct temperature to a tenth of a degree with a large LED display. Easy push buttons make setting your desired temperature simple and easy.
  • Titanium Heating Element
  • Remote Temperature Probe
  • Safety Guard
  • Magnetic Heater Holders
  • Smart Memory Chip: An integrateted smart memory chip will restore the previous temperature set point and calibration to the last stored setting once the power returns after a failure.
JBJ 500W True Temp Titanium Heating System
JBJ 500W True Temp Titanium Heating System
Our Price: $172.79
Sale Price (price includes free shipping!) $149.49
You save $23.30!
In Stock

The JBJ 500W True Temp Titanium Heating System is the most complete heating system to date with the most advanced features that set it apart as the leading heater for professional hobbyists.

Features:

  • Wattage: 500 Watts
  • Tank Size: 100 - 160 gallons
  • Dimensions: 13.1" X 1.5"
  • Accuracy: +/- 0.5F
  • 100% Digital Operation: The advanced microprocessor constantly reads and displays the correct temperature to a tenth of a degree with a large LED display. Easy push buttons make setting your desired temperature simple and easy.
  • Titanium Heating Element
  • Remote Temperature Probe
  • Safety Guard
  • Magnetic Heater Holders
  • Smart Memory Chip: An integrateted smart memory chip will restore the previous temperature set point and calibration to the last stored setting once the power returns after a failure.
JBJ 800W True Temp Titanium Heating System
JBJ 800W True Temp Titanium Heating System
Our Price: $194.39
Sale Price (price includes free shipping!) $167.49
You save $26.90!
In Stock

The JBJ 800W True Temp Titanium Heating System is the most complete heating system to date with the most advanced features that set it apart as the leading heater for professional hobbyists.

Features:

  • Wattage: 800 Watts
  • Tank Size: 160 - 260 gallons
  • Dimensions: 16.7" X 1.5"
  • Accuracy: +/- 0.5F
  • 100% Digital Operation: The advanced microprocessor constantly reads and displays the correct temperature to a tenth of a degree with a large LED display. Easy push buttons make setting your desired temperature simple and easy.
  • Titanium Heating Element
  • Remote Temperature Probe
  • Safety Guard
  • Magnetic Heater Holders
  • Smart Memory Chip: An integrateted smart memory chip will restore the previous temperature set point and calibration to the last stored setting once the power returns after a failure.
JBJ 1000W True Temp Titanium Heating System
JBJ 1000W True Temp Titanium Heating System
Our Price: $210.59
Sale Price (price includes free shipping!) $181.49
You save $29.10!
In Stock

The JBJ 1000W True Temp Titanium Heating System is the most complete heating system to date with the most advanced features that set it apart as the leading heater for professional hobbyists.

Features:

  • Wattage: 1000 Watts
  • Tank Size: 200 - 300 gallons
  • Dimensions: 16.7" X 1.5"
  • Accuracy: +/- 0.5F
  • 100% Digital Operation: The advanced microprocessor constantly reads and displays the correct temperature to a tenth of a degree with a large LED display. Easy push buttons make setting your desired temperature simple and easy.
  • Titanium Heating Element
  • Remote Temperature Probe
  • Safety Guard
  • Magnetic Heater Holders
  • Smart Memory Chip: An integrateted smart memory chip will restore the previous temperature set point and calibration to the last stored setting once the power returns after a failure.