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    Fluval LED Edge Aquarium 25W Compact Heater (use 2 heaters for 12-gallon Edge)

    Fluval LED Edge Aquarium 25W Compact Heater (use 2 heaters for 12-gallon Edge)

    Energy-efficient LEDs brilliantly illuminate these stylish designer aquariums. Fluval LED Edge Aquarium Kits elevate the popular Edge aquarium to new heights with the benefits of Light Emitting Diodes. Enjoy powerful illumination, energy savings and... more

    $19.99

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    'Aqueon Submersible Aquarium Heaters (10'' Length; For 15-40 gallon Aquariums; 100 Watts)', As Shown

    'Aqueon Submersible Aquarium Heaters (10'' Length; For 15-40 gallon Aquariums; 100 Watts)', As Shown

    Aqueon features a variety of accessories to help keep your fish and their aquatic environment clean and healthy. Aqueon introduces the most accurate, reliable, durable and easy to use aquarium heaters on the market. Available in five sizes/wattages... more

    $22.52

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    Perfect Bucket Heater w/ Cord Clip

    Perfect Bucket Heater w/ Cord Clip

    Perfect Bucket Heater w/ Cord Clip The Perfect Bucket Heater is an easy to use low wattage pail heater which keeps pails up to 5 gallons ice-free using just 80 watts. This is one of the most economic and environmental friendly way to keep pails of... more

    $34.99

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    United Pet Group Tetra-Ht55 Submersible Heater 40-55 Gallon 26463, As Shown

    United Pet Group Tetra-Ht55 Submersible Heater 40-55 Gallon 26463, As Shown

    About this item HT55 SUBMERSIBLE HEATER- 200 watt submersible heater- Electronic thermostat automatically maintains water temperature and prevents overheating, extending heater life- No adjustments are needed- The indicator light lets you know when the... more

    $24.95

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    Hydor ETH External Thermal Heater - In Line Heater ETH 300 - 300 Watt - (5/8" ID - 53-80 Gallon Tanks)

    Hydor ETH External Thermal Heater - In Line Heater ETH 300 - 300 Watt - (5/8" ID - 53-80 Gallon Tanks)

    Hydor ETH External Thermal Heater - In Line Heater ETH 300 - 300 Watt - (5/8" ID - 53-80 Gallon Tanks) more

    $57.52

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    Hagen Elite Radiant 6 Inch Aquarium Heater (Mini Compact) 50 Watt - (For Aquariums up to 10 Gallons)

    Hagen Elite Radiant 6 Inch Aquarium Heater (Mini Compact) 50 Watt - (For Aquariums up to 10 Gallons)

    Hagen Elite Radiant 6 Inch Aquarium Heater (Mini Compact) 50 Watt - (For Aquariums up to 10 Gallons) more

    $14.89

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    Bettatherm Betta Bowl Heater 7.5W, 3" diameter

    Bettatherm Betta Bowl Heater 7.5W, 3" diameter

    Mini heater stays put in Betta bowls or tanks while keeping power cord neatly organized. Zoo Med Bettatherm Betta Bowl Heater is specially designed to ensure secure and discreet placement in glass or acrylic Betta setups up to three gallons in size.... more

    $9.99

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    Hydor Usa Inc. Theo 400 Watt Submersible Shatterproof Heater 15.5" Hy00320

    Hydor Usa Inc. Theo 400 Watt Submersible Shatterproof Heater 15.5" Hy00320

    400W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 80-105 gallons.Length - 15.5"Part #: AHY00320Item Name: Theo... more

    $29.95

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    PetFenceUSA

    (250+)
    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    200W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 26-53 gallons.Length - 12"Part #: AHY00036Item Name: Theo... more

    $25.95

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    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    200W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 26-53 gallons.Length - 12"Part #: AHY00036Item Name: Theo... more

    $25.95

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    PetFenceUSA

    (250+)
    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    200W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 26-53 gallons.Length - 12 Part #: AHY00036Item Name: Theo... more

    $34.61

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    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy00036

    200W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 26-53 gallons.Length - 12 Part #: AHY00036Item Name: Theo... more

    $34.61

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    Peazz

    (100+)
    Penn Plax Warmtone LED Display Aquarium Heaters (CH23800 - 800W - 100 to 250 gallon)

    Penn Plax Warmtone LED Display Aquarium Heaters (CH23800 - 800W - 100 to 250 gallon)

    Penn Plax Warmtone Heaters are submersible, durable, dependable and double sealed to protect from water. They can be mounted horizontal or vertical and have visible LED temperature indicators. They come with a 6-foot cord and can be used in fresh or... more

    $81.99 $73.79

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    Overstock.com

    (675,000+)
    Tetra Pond 100 Watt Submersible Heater - 0861-1220

    Tetra Pond 100 Watt Submersible Heater - 0861-1220

    Dimensions: 3.5W x 1.63D x 8.25H in.. Plastic and metal construction. Adjustable between 72 degrees and 85 degrees F. Heater indicator light. For aquariums 10 to 30 gallons. This Tetra Pond 100 Watt Submersible Heater is easy to conceal and works in... more

    $16.37

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    Zoo Med Bettatherm Betta Bowl Heater - 679915, BCL498

    Zoo Med Bettatherm Betta Bowl Heater - 679915, BCL498

    Small round size heater fits most fish/betta bowls. Can be used for glass or acrylic tanks and bowls. Increases water temperature form 5 to 10 Fahrenheit. Angle cord attachment allows for easy heater placement. 7.5-watt heater for 1 to 3 gallon sizes.... more

    $17.05

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    Tetra HT10 Submersible Heater (Heater Ht10 Submers)

    Tetra HT10 Submersible Heater (Heater Ht10 Submers)

    Submersible heater No adjustment required Easy to conceal Up to 10 gallons 2 year warranty50 watts Type: Fish Food more

    $19.39

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    Overstock.com

    (675,000+)
    Mini-Therm Submersible Aquarium Heater 31021

    Mini-Therm Submersible Aquarium Heater 31021

    Compact heater for small marine, fresh water, reef and terrarium for tanks up to 2.4 gallons. Fully submersible Shatterproof Constant "on" design more

    $13.76

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    Submergible Bucket Heater W-449

    Submergible Bucket Heater W-449

    Designed to heat 5 gallons of water up to 110 degrees Thermostatically controlled to regulate the water temperature between 85 and 110 degrees Made in the usa more

    $43.70

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    Aqueon Submersible Heater 100106101

    Aqueon Submersible Heater 100106101

    Introduces the most accurate, reliable, durable and easy to use aquarium heater on the market. For aquariums up to 40 gallons. Ul approved All aqueon heaters are guaranteed for life. more

    $32.43

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    Thermo-pond 3.0 12 X 12 X 4

    Thermo-pond 3.0 12 X 12 X 4

    For ponds up to 1000 gallons Thermo-Pond is a unique patented pond heater that keeps a hole through the ice in backyard ponds for just pennies a day. In fact, Thermo-Pond can save up to $30.00 a month in electricity VS. those high wattage stock tank... more

    $39.95

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    Thermo-pond 3.0 12 X 12 X 4

    Thermo-pond 3.0 12 X 12 X 4

    For ponds up to 1000 gallons Thermo-Pond is a unique patented pond heater that keeps a hole through the ice in backyard ponds for just pennies a day. In fact, Thermo-Pond can save up to $30.00 a month in electricity VS. those high wattage stock tank... more

    $47.52

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    Peazz

    (100+)
    Thermo-pond 3.0 12 X 12 X 4

    Thermo-pond 3.0 12 X 12 X 4

    For ponds up to 1000 gallons Thermo-Pond is a unique patented pond heater that keeps a hole through the ice in backyard ponds for just pennies a day. In fact, Thermo-Pond can save up to $30.00 a month in electricity VS. those high wattage stock tank... more

    $47.52

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    Slim Heater for Mini Aquariums - 5 to 10 gal. - 15W

    Slim Heater for Mini Aquariums - 5 to 10 gal. - 15W

    A 15 watt Slim Heater is ideal for your mini or micro tropical aquarium 5 to 10 gallons in size. Shock proof heater is uniquely shaped to fit easily into a variety of tanks; above or below the substrate. Perfect for glass; acrylic; or plastic... more

    $18.99

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    Slim Heater for Bettas and Bowls - 7.5W - Up to 5 gal.

    Slim Heater for Bettas and Bowls - 7.5W - Up to 5 gal.

    A 7.5 watt Slim Heater is ideal for your betta or small fish bowl 2 to 5 gallons in size. Bettas thrive in warm water; so it?s best to keep a small heater in your bowl. Shock proof heater is shaped to fit easily into a round fish bowl; above or below... more

    $15.99

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    Tetra Tetra HT Submersible Aquarium Heater: HT30 Heater - 100 Watt - (Aquariums 10-30 Gallons) #2644

    Tetra Tetra HT Submersible Aquarium Heater: HT30 Heater - 100 Watt - (Aquariums 10-30 Gallons) #2644

    Tetra Tetra HT Submersible Aquarium Heater: HT30 Heater - 100 Watt - (Aquariums 10-30 Gallons) #26446 Tetra HT-Series Submersible Heaters are created especially for ease of use in your aquarium. An electronic thermostat automatically adjusts the heat... more

    $11.69

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    Tetra Tetra HT Submersible Aquarium Heater: HT10 Heater - 50 Watt - (Aquariums 2-10 Gallons) #26447

    Tetra Tetra HT Submersible Aquarium Heater: HT10 Heater - 50 Watt - (Aquariums 2-10 Gallons) #26447

    Tetra Tetra HT Submersible Aquarium Heater: HT10 Heater - 50 Watt - (Aquariums 2-10 Gallons) #26447 Tetra HT-Series Submersible Heaters are created especially for ease of use in your aquarium. An electronic thermostat automatically adjusts the heat... more

    $9.51

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    "Nanotherm 50w Aquarium Heater, Size: 10-20 GALLON, UPC# 810281011042, Mfg# NT-50W, Free Shipping"

    "Nanotherm 50w Aquarium Heater, Size: 10-20 GALLON, UPC# 810281011042, Mfg# NT-50W, Free Shipping"

    "Nanotherm 50w Aquarium Heater Size: 10-20 GALLON Miscellaneous PetPrecise electronic thermostat pre-set to 76 degrees fahrenheit.Temperature controlled accuracy.Shuts down when target temperature is reached.Suitable for tanks up from 10 to 20... more

    $30.04

    FREE shipping

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    "United Pet Group Tetra-Submersible Heater Ht10 10 Gallon"

    "United Pet Group Tetra-Submersible Heater Ht10 10 Gallon"

    "SUBMERSIBLE HEATER HT10The new, easy-to-use tetra ht10 and ht30 submersible heaters created especially for aquariums ranging from 2 to 10 gallons.The electronic thermostat automatically adjusts heat output to keep the water at a constant 78 f.UPC :... more

    $12.99

    FREE shipping

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    "Submersible Heater Ht10, Size: 10 GALLON, UPC# 046798264477, Mfg# 26447, Free Shipping"

    "Submersible Heater Ht10, Size: 10 GALLON, UPC# 046798264477, Mfg# 26447, Free Shipping"

    "Submersible Heater Ht10 Size: 10 GALLON Miscellaneous PetThe new, easy-to-use tetra ht10 and ht30 submersible heaters created especially for aquariums ranging from 2 to 10 gallons.The electronic thermostat automatically adjusts heat output to keep the... more

    $22.31

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    Finnex 50-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 10 to 20-Gallon

    Finnex 50-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 10 to 20-Gallon

    Finnex 50-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 10 to 20-Gallon The Finnex Compact Electronic Titanium Heaters maintain water temperature within +/-2�F of the set value providing a safe, healthy and stable temperature for... more

    $34.79

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    Finnex 200-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 60 to 80-Gallon

    Finnex 200-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 60 to 80-Gallon

    Finnex 200-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 60 to 80-Gallon The Finnex Compact Electronic Titanium Heaters maintain water temperature within +/-2�F of the set value providing a safe, healthy and stable temperature for... more

    $39.29

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    "Hydor Theo Heater 400 Watt for 80-105 Gallons (24/Cs)"

    "Hydor Theo Heater 400 Watt for 80-105 Gallons (24/Cs)"

    "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

    $31.96

    FREE shipping

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    "Hydor Theo Heater 300 Watt for 53-80 Gallons (24/Cs)"

    "Hydor Theo Heater 300 Watt for 53-80 Gallons (24/Cs)"

    "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

    $29.56

    FREE shipping

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    "United Pet Group Tetra-Submersible Heater 30-40 Gallon"

    "United Pet Group Tetra-Submersible Heater 30-40 Gallon"

    "SUBMERSIBLE HEATERUPC : 046798264620Size : 30-40 GALLONLength : 3.25Width : 1.6Height : 7.25Product Type : Aquatics - Heaters / SubmersibleShipping Dimensions: 3.25x1.6x7.25" more

    $23.99

    FREE shipping

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    Exo Terra Turtle Heater 25 Watt Up To 10 gallons

    Exo Terra Turtle Heater 25 Watt Up To 10 gallons

    Exo Terra Turtle Heater is a submersible heater preset to maintain a constant water temperature of 78 F. It features a compact design with a mounting bracket with two suction cups. The heater also contains safety features, such as a stainless steel... more

    $24.99

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    Cascade 75 Watt Submersible Aquarium Heater

    Cascade 75 Watt Submersible Aquarium Heater

    Features: For aquariums up to 15 gallons 75 watts 8" long Easy view on/off light The Penn Plax Cascade 75 Watt Submersible Heater is for Aquariums up to 15 Gallons. Automatically sets and maintains to your desired temperature, and is accurate to one... more

    $24.95

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    Cascade 300 Watt Submersible Aquarium Heater

    Cascade 300 Watt Submersible Aquarium Heater

    Features: For aquariums up to 75 gallons 300 watts 12" long Easy view on/off light The Penn Plax Cascade 300 Watt Submersible Heater is for Aquariums up to 75 Gallons. Automatically sets and maintains to your desired temperature, and is accurate to one... more

    $26.95

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    Tetra HT30 Submersible Heater 100 Watt (1030 Gal)

    Tetra HT30 Submersible Heater 100 Watt (1030 Gal)

    HT Submersible Heater (100 Watt)The new Tetra HT10 and HT30 submersible heaters for aquariums ranging from 2 to 30 gallons are easy to use. The electronic thermostat automatically adjusts heat output to keep the water at a constant 78F. All you have to... more

    $19.86 $12.29

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    Tetra Submersible Heater Ht30

    Tetra Submersible Heater Ht30

    The new, easy-to-use tetra ht10 and ht30 submersible heaters created especially for aquariums ranging from 2 to 30 gallons. The electronic thermostat automatically adjusts heat output to keep the water at a constant 78 f. Contains: Glass Electrical... more

    $26.59 $12.29

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    Tetra HT Submersible Aquarium Heater

    Tetra HT Submersible Aquarium Heater

    Tetra's 150 Watt Submersible Heater is designed for 30 to 40 gallon Aquariums. UL listed. Electronic thermostat automatically maintains water temperature. Prevents overheating, extending heater life. No adjustments necessary. The indicator light lets... more

    $29.99

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    (375,000+)

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