You're in Fish Supplies

Narrow Search Results

  • Price Range

    $ to $
    Update>>
  • By Aquariums & Accessories

    By Aquarium Supplies & Equipment

    By Image Color

    By Keyword

    Theo Heater 300 watt

    Theo Heater 300 watt

    Patented heating element automatically turns off if water level declines Easy temperature adjustment - knob clicks at every degree change Submersible heater with shatterproof glass resists breakage Patented heating film and special shatterproof glass... more

    $27.99 $22.39

    go to store
    (275,000+)
    ETH In-Line Heater 300 watt, 5/8"

    ETH In-Line Heater 300 watt, 5/8"

    Prevents temperature variations caused by poor water circulation Precise, accurate temperature setting Indicator light shows when unit is "ON" Double insulated and double sealed The first compact aquarium heater that operates externally, saving... more

    $54.99 $43.99

    FREE shipping

    go to store
    (275,000+)
    300 Watt Pro Series Submersible Aquarium Heater AM12830

    300 Watt Pro Series Submersible Aquarium Heater AM12830

    300 Watt Pro Series Submersible Aquarium Heater The Professional Aquarium Glass Submersible Heater, 300 Watt, provides accurate thermal control for freshwater and saltwater aquariums, aquaculture, terrariums and hydroponic systems! Heats 60 gallon... more

    $25.99

    FREE shipping

    go to store
    Lifegard Aquatics 300 Watt Adjustable Quartz Glass Aquarium Heater

    Lifegard Aquatics 300 Watt Adjustable Quartz Glass Aquarium Heater

    Lifegard Aquatics 300 Watt Adjustable Quartz Glass Aquarium HeaterSubmersible heater safe for both freshwater and saltwater tanksFor tanks from 110 gallons to 150 gallonsAdjustable from 68-88 FLength: 15.15" more

    $24.92

    go to store
    Hydor USA Eth In-Line Heater, 300 watt

    Hydor USA Eth In-Line Heater, 300 watt

    Features: First and unique external heater for aquariums with the exclusive PTC (Positive Thermal Coefficient) technology The self-limiting PTC heating element guarantees maximum safety against any risk of overheating The exclusive technology and the... more

    $71.91 $54.97

    FREE shipping

    go to store
    Aquatop Aquarium Glass Submersible Heater, 300-Watt

    Aquatop Aquarium Glass Submersible Heater, 300-Watt

    Maintain constant and stable temperatures for your aquatic creatures to thrive with Aqua Top s GH-300W aquarium heater. This analog glass heater offers simple and easy installation with the use of the included suction cups and can handle aquariums up... more

    $28.67

    FREE shipping

    go to store
    50W Submersible Aquarium Heater 300 Watt, Fast shipping,Brand Sundix

    50W Submersible Aquarium Heater 300 Watt, Fast shipping,Brand Sundix

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

    $35.39

    FREE shipping

    go to store
    Cobalt Aquatics Accu-Therm Heater, 300 watt

    Cobalt Aquatics Accu-Therm Heater, 300 watt

    The all new Cobalt Aquatics ACCU-Therm fully submersible heaters feature an easy to set thermostat with and ON/OFF indicator light that is Triac equipped that turns the heater on and of at lower voltage, and magnetic contacts that ensure positive... more

    $41.11 $26.23

    go to store
    AZOO Aquarium 300 Watt Titanium Heater

    AZOO Aquarium 300 Watt Titanium Heater

    Built to last, the AZOO Aquarium 300 Watt Titanium Heater creates a cozy atmosphere for your fish to thrive. With a temperature control of 69 to 91-degrees Fahrenheit, this 300-watt aquarium heater is covered in a thick layer of titanium for... more

    $62.00

    FREE shipping

    go to store
    Xtreme Heaters 300 Watt Engine Compartment Heater 180 Cu Feet, Brown

    Xtreme Heaters 300 Watt Engine Compartment Heater 180 Cu Feet, Brown

    XTREME Heater 300. Bilge heaters built with new technology makes Xtreme the smart choice for the serious boater. BTU: 1023 - 1790. Cubic Ft: 180. Wattage: 300-525+. Exit Air Temp: 167. The core of the Xtreme Heater is a heating element that is... more

    $317.69

    FREE shipping

    go to store
    Aqueon Submersible Aquarium Heaters 150 Watts - (3.7\"L x 1.5\"W x 15\"H)

    Aqueon Submersible Aquarium Heaters 150 Watts - (3.7\"L x 1.5\"W x 15\"H)

    DUF1032Features: Heater Available in 50 Watt, 100 Watt, 150 Watt, 200 Watt and 300 Watt sizes Introduces most accurate, reliable, durable and easy to use aquarium heater on market Wattages to fit any size aquarium All aqueon heaters are guaranteed for... more

    $21.45

    go to store
    Aqueon Submersible Aquarium Heaters (10" Length; For 15-40 gallon Aquariums; 100 Watts)

    Aqueon Submersible Aquarium Heaters (10" Length; For 15-40 gallon Aquariums; 100 Watts)

    DUF1032Features: Heater Available in 50 Watt, 100 Watt, 150 Watt, 200 Watt and 300 Watt sizes Introduces most accurate, reliable, durable and easy to use aquarium heater on market Wattages to fit any size aquarium All aqueon heaters are guaranteed for... more

    $41.72 $21.97

    go to store
    Theo Heater 300 watt

    Theo Heater 300 watt

    Patented heating element automatically turns off if water level declines Easy temperature adjustment - knob clicks at every degree change Submersible heater with shatterproof glass resists breakage Patented heating film and special shatterproof glass... more

    $22.39

    go to store
    (275,000+)
    Elite Submersible Preset Heater, 50 Watt

    Elite Submersible Preset Heater, 50 Watt

    Pictured in 300 W HGE1342 Features: Heater Available in several watts Ceramic core for even and efficient heat distribution Offers accurate and reliable aquarium temperature Built with high impact glass which helps to prevent breakage Unique suction... more

    $58.70

    FREE shipping

    go to store
    Hagen Elite Submersible Preset Heater

    Hagen Elite Submersible Preset Heater

    Pictured in 300 W HGE1342 Features: Heater Available in several watts Ceramic core for even and efficient heat distribution Offers accurate and reliable aquarium temperature Built with high impact glass which helps to prevent breakage Unique suction... more

    $73.40

    FREE shipping

    go to store
    Elite Submersible Preset Heater

    Elite Submersible Preset Heater

    Pictured in 300 W HGE1342 Features: Heater Available in several watts Ceramic core for even and efficient heat distribution Offers accurate and reliable aquarium temperature Built with high impact glass which helps to prevent breakage Unique suction... more

    $60.80

    FREE shipping

    go to store
    Glass Heater With External Digital Controller

    Glass Heater With External Digital Controller

    Fully submersible Tank capacity up to 80 gallons Temperate range: 68-93 degrees fahrenheit External digital control with easy to read display Shows water temperature and target temperature Size: 300 Watts. more

    $50.54

    FREE shipping

    go to store
    Aqueon Submersible Aquarium Heaters (300 Watt)

    Aqueon Submersible Aquarium Heaters (300 Watt)

    Aqueon Pro Submersible Aquarium Heater works to reliably regulate the temperature in your fish tank with precision. This heater is appropriate for both freshwater and saltwater tanks and can be completely submerged in the water. The advanced technology... more

    $41.99 $29.99

    go to store
    "Aqueon Products-supplies-Aqueon Submersible Heater 300 Watt"

    "Aqueon Products-supplies-Aqueon Submersible Heater 300 Watt"

    "AQUEON SUBMERSIBLE HEATERIntroduces the most accurate, reliable, durable and easy to use aquarium heater on the market.Available in five sizes/wattages to fit any size aquarium.All aqueon heaters are guaranteed for life.UPC : 015905061049Size : 300... more

    $36.99

    FREE shipping

    go to store
    "Submersible Glass Aquarium Heater, Size: 300 WATT, UPC# 810281019437, Mfg# GH300, Free Shipping"

    "Submersible Glass Aquarium Heater, Size: 300 WATT, UPC# 810281019437, Mfg# GH300, Free Shipping"

    "Submersible Glass Aquarium Heater Size: 300 WATT Miscellaneous PetFully submersible glass heater offers simple and easy installation with use of suction cups.Maintain constant and stable temperatures for your aquatic creatures.Can handle aquariums up... more

    $26.51

    FREE shipping

    go to store
    Hydor Hydor Submersible Aquarium Heater: 300 Watt - 15.5 Long - (53 - 80 Gallons) #T11402 - Aquariu

    Hydor Hydor Submersible Aquarium Heater: 300 Watt - 15.5 Long - (53 - 80 Gallons) #T11402 - Aquariu

    Hydor Hydor Submersible Aquarium Heater: 300 Watt - 15.5 Long - (53 - 80 Gallons) #T11402 The Hydor Aquarium Heater is a submersible heater made with the exclusive PTC (Positive Thermal Coefficient) technology. This Hydor aquarium heater provides no... more

    $25.60

    go to store
    Marineland Precision Submersible Aquarium Heaters 300 Watt

    Marineland Precision Submersible Aquarium Heaters 300 Watt

    Marineland Precision Submersible Aquarium Heater features a built-in thermal safety switch that maintains proper aquarium water temperature within 1 degree of accuracy. The thermal safety switch prevents heater failure during operation. If the... more

    $28.99

    go to store
    Aquatop Aquatop Digital Heater with Temperature Sensor: 300 Watt - (Aquariums up to 100 Gallons) #D2

    Aquatop Aquatop Digital Heater with Temperature Sensor: 300 Watt - (Aquariums up to 100 Gallons) #D2

    Aquatop Aquatop Digital Heater with Temperature Sensor: 300 Watt - (Aquariums up to 100 Gallons) #D2HT-300 Aquatop’s D2HT Digital Heater Series provides accurate heating for your freshwater or saltwater aquarium. The D2HT Aquarium Heater uses the... more

    $54.99

    go to store
    Aqueon Submersible Aquarium Heaters (300 Watt)

    Aqueon Submersible Aquarium Heaters (300 Watt)

    $31.49

    go to store
    Finnex Analog Heater Controller with Deluxe 300-watt Titanium Tube

    Finnex Analog Heater Controller with Deluxe 300-watt Titanium Tube

    Finnex Analog Heater Controller with Deluxe 300-watt Titanium Tube The HC-0800U Finnex electronic controller is equipped with a temperature dial allowing a temperature range from 68 - 92?F. Equipped with a temperature sensor, these units soundly... more

    $67.79

    FREE shipping

    go to store
    Aqueon Aqueon Submersible Aquarium Heaters: 300 Watts - (3.7 L x 1.5 W x 17 H) #6104 - Aquarium Heat

    Aqueon Aqueon Submersible Aquarium Heaters: 300 Watts - (3.7 L x 1.5 W x 17 H) #6104 - Aquarium Heat

    Aqueon Aqueon Submersible Aquarium Heaters: 300 Watts - (3.7 L x 1.5 W x 17 H) #6104 Aqueon Submersible Aquarium Heater is a completely submersible aquarium heater with precise temperature setting. Featuring a shatter resistant construction, this... more

    $24.99

    go to store
    "Theo Shatterproof Heater, Size: 300 WATT, UPC# 841421000374, Mfg# T11402, Free Shipping"

    "Theo Shatterproof Heater, Size: 300 WATT, UPC# 841421000374, Mfg# T11402, Free Shipping"

    "Theo Shatterproof Heater Size: 300 WATT Miscellaneous AquariamShatterproof, safe, submersible.5.5 long.All items are brand new, never worn and never used. We guarantee the authenticity of all items.Thank you for shopping at The Pet Supply Company! " more

    $47.02

    FREE shipping

    go to store
    Finnex 300-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 80 to 100-Gallon

    Finnex 300-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 80 to 100-Gallon

    Finnex 300-Watt Hang-On Electronic Controller Aquarium Heater, Titanium Tube, 80 to 100-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

    $43.29

    go to store
    Aquatics Marineland Visi-Therm ML90654 Submersible Aquarium Heater, 300 watt

    Aquatics Marineland Visi-Therm ML90654 Submersible Aquarium Heater, 300 watt

    Features: More reliable temperature reading (accurate) Easy to adjust temperature dial Replaces current Visi-Therm heater once available Maintains precise aquarium temperatures to within 1 deg F accuracy Thermal safety switch turns off automatically to... more

    $43.63 $22.69

    go to store
    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

    $99.97 $25.99

    go to store

    More information about Fish Supplies

    Best prices on Fluval heater 300 watts in Fish Supplies online. Visit Bizrate to find the best deals on top brands. Read reviews on Pet Supplies merchants and buy with confidence.