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    Cobalt Aquatics Neo-Therm Heater 300W, 10-7/8" long x 2 (Mfg# 31007)

    Cobalt Aquatics Neo-Therm Heater 300W, 10-7/8" long x 2 (Mfg# 31007)

    Up to 40% Off Treats!

    Flat, narrow design provides sleek, subtle aquarium heating. Within the stylish exterior of the Cobalt Aquatics Neo-Therm Heater lies a sophisticated electronic microprocessor thermostat to ensure aquarium temperatures accurate within +/-0.5°F.... more

    $140.27

    FREE shipping

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    (275,000+)
    Cobalt Aquatics Accu-Therm Heater 300W (mfg# 31017)

    Cobalt Aquatics Accu-Therm Heater 300W (mfg# 31017)

    Up to 40% Off Treats!

    Fully submersible, European-made heater boasts premium features, simple operation and hobby-friendly price. Cobalt Aquatics Accu-Therm Heater is computer-tested accurate within +/-2°F. triac-equipped heater turns on and off at a lower voltage to extend... more

    $33.75

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    (275,000+)
    Cobalt Aquatics Neo-Therm Heater 300W, 10-7/8" long x 2 (Mfg# 31007)

    Cobalt Aquatics Neo-Therm Heater 300W, 10-7/8" long x 2 (Mfg# 31007)

    Flat, narrow design provides sleek, subtle aquarium heating. Within the stylish exterior of the Cobalt Aquatics Neo-Therm Heater lies a sophisticated electronic microprocessor thermostat to ensure aquarium temperatures accurate within +/-0.5°F.... more

    $140.27

    FREE shipping

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    Cobalt Aquatics Accu-Therm Heater 300W (mfg# 31017)

    Cobalt Aquatics Accu-Therm Heater 300W (mfg# 31017)

    Fully submersible, European-made heater boasts premium features, simple operation and hobby-friendly price. Cobalt Aquatics Accu-Therm Heater is computer-tested accurate within +/-2°F. triac-equipped heater turns on and off at a lower voltage to extend... more

    $33.75

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    Betta Therm Heater

    Betta Therm Heater

    Your betta lives the best in warm water and the Bettatherm Betta Bowl Heater keeps your betta bowl 5-10 degrees warmer than your room temperature. Fully submersible design is round and fits most glass or acrylic bowls. more

    $8.99

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    In Line Heater Eth 300W 53-80G

    In Line Heater Eth 300W 53-80G

    Easy to connect to any canister filter, the ETH External In-Line Heater is suitable for both freshwater and marine aquariums. Installs vertically on the return line of a canister filter or sump, allowing for better heat distribution as water returns to... more

    $49.99

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    Accu-Therm Submersible Aquarium Heater Black 150 Watt/40 Gal

    Accu-Therm Submersible Aquarium Heater Black 150 Watt/40 Gal

    Easy temperature setting Includes double sided mounting brackets with suction cups On/off indicator light Size: 150 Watt/40 Gallon. Color: Black. more

    $32.64

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    Accu-Therm Submersible Aquarium Heater Black 100 Watt/29 Gal

    Accu-Therm Submersible Aquarium Heater Black 100 Watt/29 Gal

    The all new Cobalt Aquatics ACCU-Therm fully submersible heaters feature an easy to set thermostat with andON/OFF indicator light that is Triac equipped that turns the heater on and of at lower voltage to extend life and reliability of the heater and... more

    $30.47

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    Accu-Therm Submersible Aquarium Heater 31011

    Accu-Therm Submersible Aquarium Heater 31011

    Shatterproof heater for marine, fresh water and reef for tanks ups to 12 gallons Easy temperature setting Includes double sided mounting brackets with suction cups On/off indicator light Ceramic heat radiator more

    $22.49

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    Easy-Therm Submersible Aquarium Heater 31051

    Easy-Therm Submersible Aquarium Heater 31051

    Compact, shatterproof heater for marine, fresh water, reef and terrarium for tanks up to 12 gallons. Easy to see led indicator lights Includes double sided mounting brackets with suction cups Super flat modern design Fully submersible more

    $36.20

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    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    300W in-line aquarium heater suitable for all canister filters with 5/8" flexible hosing. No danger of damage if unit is run dry for short period as the ETH will switch itself off before overheating. Heats with high efficiency and designed to avoid... more

    $47.95

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    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    300W in-line aquarium heater suitable for all canister filters with 5/8 flexible hosing. No danger of damage if unit is run dry for short period as the ETH will switch itself off before overheating. Heats with high efficiency and designed to avoid... more

    $58.24

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    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    300W in-line aquarium heater suitable for all canister filters with 5/8 flexible hosing. No danger of damage if unit is run dry for short period as the ETH will switch itself off before overheating. Heats with high efficiency and designed to avoid... more

    $58.24

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    Peazz

    (100+)
    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    300W in-line aquarium heater suitable for all canister filters with 5/8" flexible hosing. No danger of damage if unit is run dry for short period as the ETH will switch itself off before overheating. Heats with high efficiency and designed to avoid... more

    $47.95

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    300W Aquarium Mini Submersible Fish Tank Adjustable Water Heater (300W)

    300W Aquarium Mini Submersible Fish Tank Adjustable Water Heater (300W)

    Easy to use, Safe,Precise. Fully submersible heaters work in any position (horizontal or vertical) to provide optimum aquarium water temperature. Safe and reliable in both fresh and salt water aquariums!. Temperature range between 65F and 93F.... more

    $11.49

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    Overstock.com

    (675,000+)
    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    Hydor Usa Inc. Eth300 300 Watt External In - Line Heater For 5/8" Hose Hy00019

    300W in-line aquarium heater suitable for all canister filters with 5/8" flexible hosing. No danger of damage if unit is run dry for short period as the ETH will switch itself off before overheating. Heats with high efficiency and designed to avoid... more

    $47.95

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    Visi-Therm Deluxe Submersible Heater - 200W - Up to 55 gal.

    Visi-Therm Deluxe Submersible Heater - 200W - Up to 55 gal.

    Marineland's Visi-Therm Deluxe Heater is reliable and accurate. It maintains a temperature within one degree over or under the set temperature. The temperature is easy to set and it lets you know with a ''click'' sound for every adjustment. The... more

    $28.99

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    Visi-Therm Deluxe Submersible Heater - 75W - Up to 20 gal.

    Visi-Therm Deluxe Submersible Heater - 75W - Up to 20 gal.

    Marineland's Visi-Therm Deluxe Heater is reliable and accurate. It maintains a temperature within one degree of the set temperature. The temperature is easy to set and it lets you know with a ''click'' sound for every adjustment. The Visi-Therm Deluxe... more

    $24.99

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    Accu Therm Heater 300w (glass)

    Accu Therm Heater 300w (glass)

    Cobalt - Accu Therm Heater 300W. The all new Cobalt Aquatics ACCU-Thern fully submersible heaters feature an easy to set thermostat with andON/OFF indicator light that is Triac equipped that turns the heater on and of at lower voltage to extend life... more

    $29.38

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    Cobalt Accu Therm Aquarium Heaters Accu Therm 200

    Cobalt Accu Therm Aquarium Heaters Accu Therm 200

    Cobalt Accu-Therm Aquarium Heaters are fully submersible, shock resistant fish tank heaters that provide superior heat distribution to both freshwater and saltwater aquariums. It is made of resilient Borosilicate glass surrounding a high quality... more

    $31.39 $26.69

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    Cobalt Accu Therm Aquarium Heaters Accu Therm 100

    Cobalt Accu Therm Aquarium Heaters Accu Therm 100

    Cobalt Accu-Therm Aquarium Heaters are fully submersible, shock resistant fish tank heaters that provide superior heat distribution to both freshwater and saltwater aquariums. It is made of resilient Borosilicate glass surrounding a high quality... more

    $28.49 $19.79

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    Aquarium Systems Visi-Therm Heater Holder #VT000 - Aquarium Heater Parts

    Aquarium Systems Visi-Therm Heater Holder #VT000 - Aquarium Heater Parts

    Aquarium Systems Visi-Therm Heater Holder #VT000 Aquarium Systems Visi-Therm Heater Replacement Suction Cup & Clip. This kit contains 2 suction cups and 2 clips to mount your Visi-Therm heater securely on the aquarium wall. The black color is... more

    $3.80

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    "Visi-therm Heater, Size: 75 WATT, UPC# 047431904408, Mfg# ML90440, Free Shipping"

    "Visi-therm Heater, Size: 75 WATT, UPC# 047431904408, Mfg# ML90440, Free Shipping"

    "Visi-therm Heater Size: 75 WATT Miscellaneous AquariamHigh visibility temp setting with easy-to-view sliding scale tells the exact temperature setting.Click-set temperature dial to accurately set temperature to plus/minus 1 degree fahrenheit with... more

    $33.29

    FREE shipping

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    Accu Therm Heater 250w (glass)

    Accu Therm Heater 250w (glass)

    Cobalt - Accu Therm Heater 250W. The all new Cobalt Aquatics ACCU-Thern fully submersible heaters feature an easy to set thermostat with andON/OFF indicator light that is Triac equipped that turns the heater on and of at lower voltage to extend life... more

    $28.88

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    "Marineland Filtration-Visi-therm Heater 50 Watt"

    "Marineland Filtration-Visi-therm Heater 50 Watt"

    "VISI-THERM HEATERHigh visibility temp setting with easy-to-view sliding scale tells the exact temperature setting.Click-set temperature dial to accurately set temperature to plus/minus 1 degree fahrenheit with every click.Advanced mounting bracket,... more

    $25.99

    FREE shipping

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    "Visi-therm Heater, Size: 25 WATT, UPC# 047431904385, Mfg# ML90438, Free Shipping"

    "Visi-therm Heater, Size: 25 WATT, UPC# 047431904385, Mfg# ML90438, Free Shipping"

    "Visi-therm Heater Size: 25 WATT Miscellaneous AquariamHigh visibility temp setting with easy-to-view sliding scale tells the exact temperature setting.Click-set temperature dial to accurately set temperature to plus/minus 1 degree fahrenheit with... more

    $33.58

    FREE shipping

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    "Marineland Filtration-Visi-therm Heater 150 Watt"

    "Marineland Filtration-Visi-therm Heater 150 Watt"

    "VISI-THERM HEATERHigh visibility temp setting with easy-to-view sliding scale tells the exact temperature setting.Click-set temperature dial to accurately set temperature to plus/minus 1 degree fahrenheit with every click.Advanced mounting bracket,... more

    $28.99

    FREE shipping

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    Cobalt Neo Therm Submersible Heater

    Cobalt Neo Therm Submersible Heater

    Cobalt Neo Therm Submersible Heater The Cobalt Neo Therm Submersible Heater has a sleek, modern design with a 'one touch' control system. This submersible electronic heater has an advanced thermostat that is accurate within 0.5F. It has an easily... more

    $50.49 $37.87

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    Cobalt Accu Therm Submersible Heater

    Cobalt Accu Therm Submersible Heater

    Cobalt Accu Therm Submersible Heater The Cobalt Accu Therm Submersible Heater has a tube that is made of Borosilicate glass for optimum heat and is shock resistant. It surrounds a high quality ceramic heat radiator that ensures even heat distribution.... more

    $31.99 $23.99

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    Hagen 300W Glass Reservoir Heater

    Hagen 300W Glass Reservoir Heater

    "Features Include: Submersible heater, Easy-to-access temperature set dial, Easy-to-read temperature settings, On/Off pilot light indicator, Water proof sealing, Pilot light, Includes bracket with suction cups for easy, secure installation, 5.9... more

    $38.91

    FREE shipping

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    Hydor 300W Theo Aquarium Heater

    Hydor 300W Theo Aquarium Heater

    Theo reservoir & aquarium heaters have all the necessary features for safe and precise temperature maintenance of the water in your tank or reservoir. The exclusive technology and the high quality of the components guarantee a long lasting product.... more

    $46.19

    FREE shipping

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    150w/300w/500w In-Line External Heater AQUARIUM HEATER - 150/300/500 WATT 1/2"-5/8" (300 Watt 1/2"(12/16mm) Hose)

    150w/300w/500w In-Line External Heater AQUARIUM HEATER - 150/300/500 WATT 1/2"-5/8" (300 Watt 1/2"(12/16mm) Hose)

    Features:1. Thermal spraying glass, speed up the heating process, higher efficiency.2. External design, easy to install and doesn’t occupy space in the tank.3. Two sensors to exam the temperatures of water inlet and outlet.4. Auto power off safety... more

    $63.99

    FREE shipping

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    Mini Aquarium Submersible Heater Fish Tank Adjustable Water Heater 300W 2017

    Mini Aquarium Submersible Heater Fish Tank Adjustable Water Heater 300W 2017

    Features: Easy to use, Safe,Precise. Fully submersible heaters work in any position (horizontal or vertical) to provide optimum aquarium water temperature. Safe and reliable in both fresh and salt water aquariums! Temperature range between 65F and 93F... more

    $10.99

    FREE shipping

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    Cobalt Aquatics Neo-Therm Heater 25W, 6-1/2" long (Mfg# 31000)

    Cobalt Aquatics Neo-Therm Heater 25W, 6-1/2" long (Mfg# 31000)

    Up to 40% Off Treats!

    Flat, narrow design provides sleek, subtle aquarium heating. Within the stylish exterior of the Cobalt Aquatics Neo-Therm Heater lies a sophisticated electronic microprocessor thermostat to ensure aquarium temperatures accurate within +/-0.5°F.... more

    $58.89

    FREE shipping

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    (275,000+)
    Cobalt Aquatics Neo-Therm Heater 150W, 10-7/8" long (Mfg# 31005)

    Cobalt Aquatics Neo-Therm Heater 150W, 10-7/8" long (Mfg# 31005)

    Up to 40% Off Treats!

    Electronic heater for aquatic reptiles designed for safe, simple and accurate water temperature control. Cobalt Aquatics Neo-Therm Heater features advanced thermal protection circuitry and durable shatter-proof design. Temperature setting from 66... more

    $76.45

    FREE shipping

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    (275,000+)
    Mini-Therm Plastic 20

    Mini-Therm Plastic 20

    The all new Cobalt Aquatics MINI-Therm compact and fully submersible heaters feature a constant ON design, specifically for small aquariums up to 5 gals. The heater casing is made from a thermal-plastic polymer that is shatterproof. An internal ceramic... more

    $13.99

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    Easy Therm 50W Plastic

    Easy Therm 50W Plastic

    The all new Cobalt Aquatics Easy-Therm fully submersible heaters feature a modern, flat design, and a simple to set thermostat with easy to see ON/OFF indicator lights. The positive clicking thermostat is equipped with a Triac that turns the heater on... more

    $26.99

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    300W Heater Digital Dual Dual Display

    300W Heater Digital Dual Dual Display

    Suitable for both freshwater and saltwater applications, the AQUATOP D2HT series comes equipped with a highly visible dual digital temperature display, an easy to use temperature control button, and a separately attached temperature sensor, providing a... more

    $29.99

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    Cobalt Aquatics Accu-Therm Heater 150W (mfg# 31014)

    Cobalt Aquatics Accu-Therm Heater 150W (mfg# 31014)

    Up to 40% Off Treats!

    Fully submersible, European-made heater boasts premium features, simple operation and hobby-friendly price. Cobalt Aquatics Accu-Therm Heater is computer-tested accurate within +/-2°F. triac-equipped heater turns on and off at a lower voltage to extend... more

    $30.50

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    (275,000+)
    Finnex TH Series Titanium Heating Tubes 300W Heater w/Guard (Mfg# TH-0300S)

    Finnex TH Series Titanium Heating Tubes 300W Heater w/Guard (Mfg# TH-0300S)

    Up to 40% Off Treats!

    Titanium heaters upgraded with added safety and greater installation ease. Finnex TH Series Titanium Heating Tubes feature a protective heater guard that encases the heating element to safeguard aquarium inhabitants as well as surrounding equipment.... more

    $43.99

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    (275,000+)

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