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    Best Seller
    Hydor Slim Heater for Micro Tanks & Mini Aquariums Aquariums 2-5 Gallons (7.5 Watts) - Pack of 12

    Hydor Slim Heater for Micro Tanks & Mini Aquariums Aquariums 2-5 Gallons (7.5 Watts) - Pack of 12

    Helps increase by a few degrees Fahrenheit/Celsius the water temperature of mini aquariums compared to the room temperature where they are positioned.This is an offering for multi quantity bundle - 12 count more

    $126.45

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    Hydor ETH 200 In-Line External Aquarium Heater, 200-Watt, 5/8 Hose

    Hydor ETH 200 In-Line External Aquarium Heater, 200-Watt, 5/8 Hose

    ETH Heaters are the first external heaters for aquariums with the exclusive PTC technology. The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. Designed to be used on return lines coming from canister... more

    $83.08 $58.98

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    Best Seller
    Slim Heater for Bettas, Bowls and Aquariums 7.5 Watt, Oval, up to 5 gal, USA, Brand Hydor

    Slim Heater for Bettas, Bowls and Aquariums 7.5 Watt, Oval, up to 5 gal, USA, Brand Hydor

    Helps guarantee your fish a healthy life by promoting the ideal water temperature.Plug and Play, No temperature to setCan be positioned under gravelNo glass componentsHeater is UL listed more

    $17.79

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    Hydor Theo Aquarium Heater, 400-Watt

    Hydor Theo Aquarium Heater, 400-Watt

    Hydor 400W Submersible Glass Aquarium Heater - Original Theo (Pack of 1) more

    $45.29 $27.69

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    Hydor Pico 200 Centrifugal Mini Pump 70 gph

    Hydor Pico 200 Centrifugal Mini Pump 70 gph

    " The new PICO EVOLUTION range of pumps by Hydor guarantees high performance, small size and total safety. All models, even the smallest, have a flow regulation and are ideal for applications in tropical and marine aquariums, in terrariums, table... more

    $11.99

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    Hydor Theo Heater 200 Watt for 26-53 Gallons

    Hydor Theo Heater 200 Watt for 26-53 Gallons

    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

    $35.69

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    "Hydor Submersible Aquarium Heater 25 Watt - 6.9"" Long - (2 - 7 Gallons)"

    "Hydor Submersible Aquarium Heater 25 Watt - 6.9"" Long - (2 - 7 Gallons)"

    "Hydor Submersible Aquarium Heater 25 Watt - 6.9"" Long - (2 - 7 Gallons)" more

    $19.41

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    Hydor 200W In-Line Heater, 1/2" Connection

    Hydor 200W In-Line Heater, 1/2" Connection

    "The Hydor 200W In-Line Heater, 1/2"" 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. Must be used in line. Not... more

    $83.84 $41.99

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    Hydor Theo Heater 400 Watt for 80-105 Gallons

    Hydor Theo Heater 400 Watt for 80-105 Gallons

    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

    $44.09

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    Hydor Slim Heater for Bettas and Bowls, 7.5-Watt

    Hydor Slim Heater for Bettas and Bowls, 7.5-Watt

    Hydor 7-1/2-watt Slim Heater helps guarantee your fish a healthy life by promoting the ideal water temperature. Specially designed with the innovative PTC (Positive Thermal Coefficient) element to heat the temperature of your aquarium or terrarium an... more

    $6.99

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    Hydor Theo Aquarium Heater, 300-Watt

    Hydor Theo Aquarium Heater, 300-Watt

    Hydor 300W Submersible Glass Aquarium Heater - Original Theo (Pack of 1) more

    $99.97 $25.99

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    Hydor Submersible Glass Aquarium Heater, 150-Watt

    Hydor Submersible Glass Aquarium Heater, 150-Watt

    Theo Heater. New aquarium heater functioning with the exclusive PTC technology means that this heater will not break or damage when run out of the tank. Theo aquarium heater has all the necessary feature for safe and precise temperature maintenance of... more

    $28.54 $16.61

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    Hydor USA Eth In-Line Heater, 300 watt

    Hydor USA Eth In-Line Heater, 300 watt

    Hydor USA Eth In-Line Heater, 300 watt more

    $71.91 $56.24

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    Hydor 100W Submersible Glass Aquarium Heater - Original Theo (Pack of 1)

    Hydor 100W Submersible Glass Aquarium Heater - Original Theo (Pack of 1)

    Hydor 100W Submersible Glass Aquarium Heater - Original Theo (Pack of 1) more

    $20.79

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    Hydor Slim Heater for Bettas, Bowls and Aquariums

    Hydor Slim Heater for Bettas, Bowls and Aquariums

    Hydor 7-1/2-watt Slim Heater helps guarantee your fish a healthy life by promoting the ideal water temperature. Specially designed with the innovative PTC (Positive Thermal Coefficient) element to heat the temperature of your aquarium or terrarium an... more

    $13.00

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    Hydor Theo Heater 300 Watt for 53-80 Gallons

    Hydor Theo Heater 300 Watt for 53-80 Gallons

    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

    $40.94

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    Hydor USA SlimSkim Internal Skimmer for Mini Aquariums and Mini Reefs 25-35 gal

    Hydor USA SlimSkim Internal Skimmer for Mini Aquariums and Mini Reefs 25-35 gal

    "Hydor USA SlimSkim Internal Skimmer for Mini Aquariums and Mini ReefsSize:25-35 gal The SlimSkim Nano is a specially designed internal skimmer fornano and mini-reef aquariums. The SlimSkim's unique intake design will drawfrom the water's surface,... more

    $132.16

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    Hydor Pico 600 Centrifugal Mini Pump 160 gph

    Hydor Pico 600 Centrifugal Mini Pump 160 gph

    Hydor Pico 600 Centrifugal Mini Pump 160 gph more

    $24.98

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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

    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 93FSensitive and... more

    $7.99

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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

    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 93FSensitive and... more

    $7.99

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    Submersible Heater for Aquarium, Mini, 25-watt, Mini, 25 Watt submersible heater for fresh or saltwater aquariums By Marina

    Submersible Heater for Aquarium, Mini, 25-watt, Mini, 25 Watt submersible heater for fresh or saltwater aquariums By Marina

    New and great.From USA Small yet powerful, the mini 25-watt Submersible Aquarium Heater provides reliable heating for fresh or saltwater aquariums up 5.5 US gallon aquariums. The heater includes many practical features for easy use, safety and... more

    $24.29

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    ReptiTherm Under Tank Heater, Mini, Inexpensive, low wattage heaters By Zoo Med

    ReptiTherm Under Tank Heater, Mini, Inexpensive, low wattage heaters By Zoo Med

    Thank you for shopping at Appletree. ReptiTherm® U.T.H. Under Tank Heaters are an ideal 24 hour primary or secondary heat source for tropical or temperate reptilian species. All of s Under Tank Heaters are UL/cUL approved (GS/TuV/CE in Europe) and... more

    $22.69

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    100W Aquarium Heater Mini Submersible Fish Tank Adjustable Water Heater

    100W Aquarium Heater Mini Submersible Fish Tank Adjustable Water Heater

    50W 100W Aquarium Mini Submersible Fish Tank Adjustable Water HeaterFeatures: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... more

    $8.42

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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... more

    $8.69

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

    2017 Updated 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... more

    $9.85

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    6-Inch Mini Thermostatic Heater, 25-Watt, 25-watt aquarium heater By Elite

    6-Inch Mini Thermostatic Heater, 25-Watt, 25-watt aquarium heater By Elite

    New and great.From USA The Mini Thermostatic Heater is a 25-watt heater for aquariums up to 5 gallons. It offers accurate and reliable aquarium temperature and is suitable for fresh or saltwater aquariums. The Mini Thermostatic Heater will help to keep... more

    $13.59

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    300W Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    300W Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    50W 100W Aquarium Mini Submersible Fish Tank Adjustable Water HeaterFeatures: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... more

    $21.52 $10.24

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    50W 200W Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    50W 200W Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    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... more

    $9.59

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    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    "Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water HeaterFeatures: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... more

    $8.00

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    Transparrent Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Transparrent Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    "Transparrent Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water HeaterFeatures:Easy to use, Safe, Precise.Fully submersible heaters work in any position (horizontal or vertical) to provide optimum aquarium water temperature.Safe and... more

    $11.54

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    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water HeaterFeatures: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... more

    $7.93

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    Transparrent Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Transparrent Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    "Transparrent Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water HeaterFeatures:Easy to use, Safe, Precise.Fully submersible heaters work in any position (horizontal or vertical) to provide optimum aquarium water temperature.Safe and... more

    $7.99

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    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    "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... more

    $10.04

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    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    "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... more

    $6.76

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    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    "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... more

    $12.66

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    100w Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    100w Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water Heater

    Durable Use Aquarium Mini Submersible Fish Tank Adjustable Water HeaterFeatures: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... more

    $9.33

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    Elite Radiant Mini Aquarium Heater 50 Watts (6" Long) - Pack of 3

    Elite Radiant Mini Aquarium Heater 50 Watts (6" Long) - Pack of 3

    25 & 50-watt aquarium heatersMaintains accurate aquarium temperaturePilot on/off switchSuitable for aquariums up to 5-10 gallons depending on wattageThis is an offering for multi quantity bundle - 3 count more

    $38.32

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    Zoo Med Aquatic Betta Therm Mini Aquarium Heater 7.5 Watts - Pack of 10

    Zoo Med Aquatic Betta Therm Mini Aquarium Heater 7.5 Watts - Pack of 10

    Mini Size Betta Bowl HeaterCompletely submersible (Bury under gravel).Increases water temperature 5-10°F over ambient room temperature.Fits most fish or Betta bowls.Can be used on both glass and acrylic tanks.This is an offering for multi quantity... more

    $119.56

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    Elite Radiant Mini Aquarium Heater 50 Watts (6" Long) - Pack of 10

    Elite Radiant Mini Aquarium Heater 50 Watts (6" Long) - Pack of 10

    25 & 50-watt aquarium heatersMaintains accurate aquarium temperaturePilot on/off switchSuitable for aquariums up to 5-10 gallons depending on wattageThis is an offering for multi quantity bundle - 10 count more

    $86.25

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    Deep Blue Heat Stik Mini Submersible Aquarium Heater, 30-Watt

    Deep Blue Heat Stik Mini Submersible Aquarium Heater, 30-Watt

    " 30W Mini Submersible Heater Features: Fully submersible, place anywhere in your aquarium. Slim, compact footprint conceals easily behind ornaments & decorations. Ideal for desktop systems. Preprogrammed, no adjustments needed. Freshwater & marine... more

    $10.99

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