Aquarium Heaters & Thermometers

Aqueon Flat Heater

$19.99 +

Small Aquatic Flat Heaters are designed for desktops at least 1 gallon in size, but less than 10 gallons. They are completely submersible, easy to install and efficiently warm aquarium water. For use with aquariums between 1 to 10 gallons...

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Aqueon Mini Heater 10 Watt

$20.99

Aqueon Mini Heater provides warmth to tropical fish. Designed with a shatterproof housing and thermal safety shut-off, this compact and completely submersible mini heater is perfect for desktop aquariums with a minimum size of 2.5 gallons and up to Ideal...

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Cobalt Aquatics Mini-Therm Heater

$24.99 +

Cobalt Aquatics Mini-Therm compact and fully submersible heaters feature a constant ON design, specifically for small aquariums. The heater casing is made from a thermal-plastic polymer that is shatterproof. An internal ceramic heat radiator that provides even and the best...

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Cobalt Aquatics Neo-Therm Heater

$64.99 +

The Cobalt Aquatics Neo-Therm fully submersible electronic heaters feature a modern, super flat design with an easy to set "one touch" control system. The advanced electronic thermostat is accurate to ±0.5° and includes a LED that displays both the Set...

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EHEIM Jager TruTemp Submersible Heaters

$34.99 +

Description 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...

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Fluval 2-in-1 Digital Aquarium Thermometer

$21.99

Water temperature is an important factor that affects the health of fish. Ideal for fresh and salt water aquariums, the wireless Fluval 2-in-1 Digital Aquarium Thermometer allows you to accurately monitor water and room temperature simultaneously. It is easily mounted...

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Fluval Compact Aquarium Heater - 25 Watt

$34.99

Fluval 25-watt Compact Aquarium Heater is an automatic, submersible heater for indoor aquariums. Requiring no manual temperature adjustments, it is designed to reach and maintain the pre-set temperature of 26º C (78º F). The heater's exterior is made of a...

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Fluval E Series Heater

$65.99 +

Description Fluval Advanced Electronic Heaters with VueTech technology delivers peace of mind thanks to several excellent features. Equipped with an intelligent digital microprocessor monitoring system with dual temperature sensors Continuously monitors and displays aquarium water temperature, ensuring the safety and...

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Fluval Edge Thermometer - 4.45 cm

$4.99

Water temperature is an important factor that affects the health of fish. Fluval vertical mount digital thermometer can accurately read temperatures ranging from 18 to 30 degrees C (64 to 86 degrees F). The thermometer has adhesive backing that allows...

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Fluval M Series Premium Submersible Heater

$37.49 +

Description Fluval M Series Premium Aquarium Heaters are quality manufactured in Europe using superior components and construction. Sleek and compact, the submersible heater provides exceptional performance and unsurpassed reliability.Includes an exclusive mirror technology that reflects the colours of the aquarium...

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Marina Compact Heaters

$29.99 +

Description The Marina compact, submersible heaters are for use in indoor aquariums. They are designed to reach and maintain the pre-set temperature of 26 C (78 F), without having to make any adjustments.The exterior is made of a tough polymer so that it...

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Marina Floating Thermometer

$3.49

With water temperature being such a critical factor for the well-being of fish, it?s important to have a good thermometer. This Marina Floating Thermometer is designed to float in the water in a vertical position. Accurate and easy to read,...

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Marina Horizontal LCD Aquarium Thermometer - 20° to 30° C

$3.99

With water temperature being such a critical factor for the well-being of fish, it’s important to have a good thermometer. This Marina LCD horizontal mount liquid crystal thermometer provides accurate and easy to read temperatures readings in Fahrenheit and Centigrade....

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Marina Large Floating Thermometer

$4.99

With water temperature being such a critical factor for the well-being of fish, it?s important to have a good thermometer. This Marina Floating Thermometer is designed to float in the water in a vertical position. It comes with a suction...

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Marina LCD Aquarium Thermometer

$3.99

With water temperature being such a critical factor for the well-being of fish, it?s important to have a good thermometer. This Marina LCD vertical mount liquid crystal thermometer provides accurate and easy to read temperatures readings in Fahrenheit and Centigrade.Ideal...

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Marina LCD Aquarium Thermometer

$4.49

With water temperature being such a critical factor for the well-being of fish, it?s important to have a good thermometer. This Marina LCD vertical mount liquid crystal thermometer provides accurate and easy to read temperatures readings in Fahrenheit and Centigrade.Ideal...

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Marina LCD Aquarium Thermometer

$4.49

With water temperature being such a critical factor for the well-being of fish, it?s important to have a good thermometer. This Marina LCD vertical mount liquid crystal thermometer provides accurate and easy to read temperatures readings in Fahrenheit and Centigrade.Ideal...

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Marina Liquid Crystal Plastic Thermometer

$4.99

With water temperature being such a critical factor for the well-being of fish, it?s important to have a good thermometer. This Marina Plastic Thermometer comes with a suction cup for easy and reliable installation on your aquarium glass. Accurate and...

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Marina Mini Submersible Aquarium Heater

$43.99

Description Small yet powerful, the mini Marina Submersible Aquarium Heater provides reliable heating for fresh or saltwater aquariums.for easy use, safety and convenience, including an easy-to-access temperature set dial, on/off pilot light indicator, and a bumper guard for fish safety....

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Marina Stainless Steel Thermometer

$4.99

With water temperature being such a critical factor for the well-being of fish, its important to have a good thermometer. This Marina Stainless Steel Thermometer easily clips onto the aquarium and provides accurate and easy-to-read temperature readings in Centigrade and...

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Marina Standing Thermometer

$3.99

With water temperature being such a critical factor for the well-being of fish, its important to have a good thermometer. This Marina Standing Thermometer is designed to sink to the bottom of the aquarium and remain in a vertical position....

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Marina Submersible Aquarium Heater

$47.99 +

Description Powerful Marina Submersible Aquarium Heaters provides reliable heating for fresh or saltwater aquariums.The heater includes many practical features for easy use, safety and convenience, including an easy-to-access temperature set dial, on/off pilot light indicator, and a bumper guard for...

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Marina Submersible Betta Heater

$21.99

Marina Betta Heater is an automatic, submersible heater that creates ideal water conditions for bettas to thrive in. The exterior is made of durable polymer, which is more resilient than traditional glass sleeve heaters. The heater is designed to reach...

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Marineland Precision Submersible Heaters

$29.99 +

Description Adjustable temperature dial clicks through each degree for accuracy Thermal switch automatically turns off past max preset and resets once the temperature lowers Advanced mica core heating element for efficient heat transfer and enhanced durability Three window positions to...

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Tetra HT10 Aquarium Heater - 50 Watt

$24.99

Tetra's HT10 heater is easy-to-use and works in aquariums ranging from 2 to 10 gallons. The heater has an electronic thermostat that automatically adjusts tje heat output to keep the water at a constant 78 degrees F. All Tetra HT heaters have red/green indicator lights...

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Tetra HT30 Aquarium Heater - 100 Watt

$29.99

Tetra's HT30 heater is easy-to-use and works in aquariums ranging from 10 to 30 gallons. The heater has an electronic thermostat that automatically adjusts tje heat output to keep the water at a constant 78 degrees F. All Tetra HT heaters have...

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Tetra HT40 Aquarium Heater - 150 Watt

$46.99

Tetra's HT40 heater is easy-to-use and works in aquariums ranging from 30 to 40 gallons. The heater has an electronic thermostat that automatically adjusts tje heat output to keep the water at a constant 78 degrees F. All Tetra HT heaters have...

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Tetra HT55 Aquarium Heater - 200 Watt

$49.99

40-55 gallons. Tetra's HT55 heater is easy-to-use and works in aquariums ranging from 40 to 55 gallons. The heater has an electronic thermostat that automatically adjusts tje heat output to keep the water at a constant 78 degrees F. All Tetra...

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Zoo Med Aqua Cool Aquarium Cooling Fan

$39.99

Fully adjustable side-mounting Aquarium Cooling Fan. Low voltage (12 v) for maximum safety when used near a wet environment. Better than overhead fans: Side-mounted fan assembly to minimize water splash on the motor and to prevent accidental immersion. Multi-directional discharge...

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