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    Hydor ETH 200 In-Line External Heater 200w 5/8 hose - Original Eth 201

    Hydor ETH 200 In-Line External Heater 200w 5/8 hose - Original Eth 201

    200W 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

    $55.78

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    Hydor ETH 200 In-Line External Heater 200w 1/2 hose

    Hydor ETH 200 In-Line External Heater 200w 1/2 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

    $61.41

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    Hydor Professional External Aquarium Filters Black Mechanical Filter Foam for PRO 450-600, 2-pk (Mfg# XC0408)

    Hydor Professional External Aquarium Filters Black Mechanical Filter Foam for PRO 450-600, 2-pk (Mfg# XC0408)

    The compact, easy-to-use Hydor Professional External Aquarium Filter enables mechanical, chemical, and biological filtration for optimal health and longevity in marine or freshwater aquariums. Although this canister-style filter is designed to take up... more

    $22.99

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    Hydor Professional External Aquarium Filters White Filter Wool for PRO 150, 2-pk (Mfg# XC0398)

    Hydor Professional External Aquarium Filters White Filter Wool for PRO 150, 2-pk (Mfg# XC0398)

    The compact, easy-to-use Hydor Professional External Aquarium Filter enables mechanical, chemical, and biological filtration for optimal health and longevity in marine or freshwater aquariums. Although this canister-style filter is designed to take up... more

    $9.99

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    Hydor Professional External Aquarium Filters White Filter Wool for PRO 250-350, 2-pk (Mfg# XC0400)

    Hydor Professional External Aquarium Filters White Filter Wool for PRO 250-350, 2-pk (Mfg# XC0400)

    The compact, easy-to-use Hydor Professional External Aquarium Filter enables mechanical, chemical, and biological filtration for optimal health and longevity in marine or freshwater aquariums. Although this canister-style filter is designed to take up... more

    $11.99

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    Hydor ETH 300 Watt Submersible Heater

    Hydor ETH 300 Watt Submersible Heater

    Hydor ETH 300 watt Submersible Heater The handy Hydor ETH Submersible Heater is an external heater for marine and tropical aquariums. The heater is suitable for all canister filters with 5/8 flexible hosing. This heater is also equipped with an ETH... more

    $75.24 $50.96

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    300W External Thermal Heater

    300W External Thermal Heater

    NA 300W External Thermal Heater more

    $57.37

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    Hydor Hydor Submersible Aquarium Heater: 100 Watt - 8.9 Long - (14 - 26 Gallons) #T11202 - Aqu

    Hydor Hydor Submersible Aquarium Heater: 100 Watt - 8.9 Long - (14 - 26 Gallons) #T11202 - Aqu

    Hydor Hydor Submersible Aquarium Heater: 100 Watt - 8.9 Long - (14 - 26 Gallons) #T11202 The Hydor Aquarium Heater is a submersible heater made with the exclusive PTC (Positive Thermal Coefficient) technology. This Hydor aquarium heater provides no... more

    $20.31

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    Hydor Hydor Submersible Aquarium Heater: 50 Watt - 7 Long - (5 - 14 Gallons) #T11102 - Aquariu

    Hydor Hydor Submersible Aquarium Heater: 50 Watt - 7 Long - (5 - 14 Gallons) #T11102 - Aquariu

    Hydor Hydor Submersible Aquarium Heater: 50 Watt - 7 Long - (5 - 14 Gallons) #T11102 The Hydor Aquarium Heater is a submersible heater made with the exclusive PTC (Positive Thermal Coefficient) technology. This Hydor aquarium heater provides no thermal... more

    $19.54

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    Hydor Hydor Submersible Aquarium Heater: 400 Watt - 15.5 Long - (80 - 105 Gallons) #T11502 - Aquari

    Hydor Hydor Submersible Aquarium Heater: 400 Watt - 15.5 Long - (80 - 105 Gallons) #T11502 - Aquari

    Hydor Hydor Submersible Aquarium Heater: 400 Watt - 15.5 Long - (80 - 105 Gallons) #T11502 The Hydor Aquarium Heater is a submersible heater made with the exclusive PTC (Positive Thermal Coefficient) technology. This Hydor aquarium heater provides no... more

    $27.12

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    Hydor THEO UL Heater

    Hydor THEO UL Heater

    Hydor THEO UL Heater THEO aquarium heater has all the necessary features for safe and precise temperature maintenance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product. 220/240V... more

    $14.49

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    Hydor Slim Heater for Bettas & Bowls 7.5 Watt

    Hydor Slim Heater for Bettas & Bowls 7.5 Watt

    Slim Heater for Bettas & Bowls 7.5 watt aquarium heater provides Bettas with natural warmth and safely fits 2-5 gallon fish bowls. It features a flat, round shape at a 90 degree angel that hides easily under gravel to keep concealed and out of sight.... more

    $11.99

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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

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    "Hydor Theo Heater 200 Watt for 26-53 Gallons (24/Cs)"

    "Hydor Theo Heater 200 Watt for 26-53 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

    $26.36

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    "Hydor Usa Inc-Theo Shatterproof Heater 300 Watt"

    "Hydor Usa Inc-Theo Shatterproof Heater 300 Watt"

    "THEO SHATTERPROOF HEATERShatterproof, safe, submersible.5.5 long.UPC : 841421000374Size : 300 WATTLength : 3.5Width : 2Height : 17.5Product Type : Aquatics - Heaters / SubmersibleShipping Dimensions: 3.5x2x17.5" more

    $40.99

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    "Hydor Usa Inc-Theo Shatterproof Heater 100 Watt"

    "Hydor Usa Inc-Theo Shatterproof Heater 100 Watt"

    "THEO SHATTERPROOF HEATERAquarium heater ideal for up to 50 gallon tanks.UPC : 841421000350Size : 100 WATTLength : 3.5Width : 2Height : 11.5Product Type : Aquatics - Heaters / SubmersibleShipping Dimensions: 3.5x2x11.5" more

    $31.99

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    Hydor Theo Heater 400 watt

    Hydor Theo Heater 400 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... more

    $31.99

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    Hydor Usa Inc. Theo 400 Watt Submersible Shatterproof Heater 15.5" Hy0

    Hydor Usa Inc. Theo 400 Watt Submersible Shatterproof Heater 15.5" Hy0

    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 Theo Aquarium Heaters 300 watt

    Hydor Theo Aquarium Heaters 300 watt

    New aquarium heater functioning with the exclusive PTC (Positive Thermal Coefficient) technology. The first shatter-proof fish tank heater thanks to the peculiar glass tube. Free positioning in the aquarium: vertical, horizontal and completely... more

    $26.99

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    Hydor THEO UL Heater

    Hydor THEO UL Heater

    Hydor THEO UL Heater THEO aquarium heater has all the necessary features for safe and precise temperature maintenance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product. 220/240V... more

    $29.99

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    Hydor Thermo-pump Ekip 200 Heater & Power-head In One Unit

    Hydor Thermo-pump Ekip 200 Heater & Power-head In One Unit

    This sale is for a new Thermo-pump (heater and powerhead in one body) EKIP 200.by HYDOR No danger of damage if the equipment is left running outside the aquarium for a short period of time. By using the new PTC system, the EKIP will switch itself off,... more

    $46.00

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    "Hydor Usa Inc-Theo Shatterproof Heater 50 Watt"

    "Hydor Usa Inc-Theo Shatterproof Heater 50 Watt"

    "THEO SHATTERPROOF HEATERAquarium heater ideal for up to 20 gallon tanks.UPC : 841421000343Size : 50 WATTLength : 3.5Width : 2Height : 9.5Product Type : Aquatics - Heaters / SubmersibleShipping Dimensions: 3.5x2x9.5" more

    $28.99

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    Hydor Theo Heater 150 watt

    Hydor Theo Heater 150 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... more

    $24.99

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    Hydor ETH 200 Watt Submersible Heater

    Hydor ETH 200 Watt Submersible Heater

    Hydor ETH 200 watt Submersible Heater The handy Hydor ETH Submersible Heater has a self limiting PTC heating element that ensures that the heater will not overheat. This helps in extending the life of the heater. It's easy to use and has a high... more

    $75.24 $50.96

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    Hydor THEO UL Heater

    Hydor THEO UL Heater

    Hydor THEO UL Heater THEO aquarium heater has all the necessary features for safe and precise temperature maintenance of the water in your tank. The exclusive technology and the high quality of the components guarantee a long lasting product. 220/240V... more

    $31.79

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    Hydor Slim Fish Tank Heater 7.5 Watt

    Hydor Slim Fish Tank Heater 7.5 Watt

    Hydor Slim 7.5 watt aquarium heater is great for micro and mini aquariums from 2-5 gallons. The flat, oval shape allows you to place this slim fish tank heater out of sight in a variety of tanks, including glass, acrylic or plastic. It helps increase... more

    $13.99

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    Hydor 400W Theo Aquarium Heater

    Hydor 400W 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

    $48.85

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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

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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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    Hydor Theo Heater 300 watt

    Hydor 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... more

    $29.99

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    "Hydor Slim Heater For Micro Tanks 15W"

    "Hydor Slim Heater For Micro Tanks 15W"

    " Free shipping on all US orders! Orders ship within 24 hours Monday through Friday. Returns accepted for 14 days after item is received. Free return shipping. Warranty and original packaging not included. " more

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    $14.99

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    "Hydor ETH In-Line Heater 300 Watt 5/8"""

    "Hydor ETH In-Line Heater 300 Watt 5/8"""

    " Prevents temperature variations caused by poor water circulation. Precise, accurate temperature setting. Double insulated and double sealed. The first compact aquarium heater that operates externally, saving interior aquarium space. Installs... more

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    $42.99

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    Hydor Theo 200 Watt Aquarium Heater Shatter Proof Glass Free Usa Shipping

    Hydor Theo 200 Watt Aquarium Heater Shatter Proof Glass Free Usa Shipping

    THEO 200 Watt Aquarium Heater Hydor Theo 200 Watt Aquarium Heater is a fully submersible, shatter-proof glass aquarium heater.Maximum security: THEO is shock resistant thanks to the PTC heating element and the shatterproof glass tube Free positioning... more

    $26.50

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    Hydor Theo 300 Watt Aquarium Heater Shatter Proof Glass Free Usa Shipping

    Hydor Theo 300 Watt Aquarium Heater Shatter Proof Glass Free Usa Shipping

    THEO 300 Watt Aquarium Heater Hydor Theo 300 Watt Aquarium Heater is a fully submersible, shatter-proof glass aquarium heater.Maximum security: THEO is shock resistant thanks to the PTC heating element and the shatterproof glass tube Free positioning... more

    $24.75

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    Hydor 200W Theo Aquarium Heater

    Hydor 200W 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

    $43.53

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    Hydor Heater Mini 15w 510 Gal

    Hydor Heater Mini 15w 510 Gal

    "The 15 Watt Mini heater will increase the water temperature in a 5 to 10 gallon aquarium 4 to 5 degrees above the room temperature. Suitable for marine or tropical aquariums, the Mini heater is completely submersible and easy to hide." more

    $10.94

    FREE shipping

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    "Hydor Slim Heater For Micro Tanks 7.5W"

    "Hydor Slim Heater For Micro Tanks 7.5W"

    " Free shipping on all US orders! Orders ship within 24 hours Monday through Friday. Returns accepted for 14 days after item is received. Free return shipping. Warranty and original packaging not included. " more

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    $12.99

    FREE shipping

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    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy000

    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy000

    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" Hy000

    Hydor Usa Inc. Theo 200 Watt Submersible Shatterproof Heater 12" Hy000

    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 MagiKlean Pump Cleaner 3/Pk

    Hydor MagiKlean Pump Cleaner 3/Pk

    "Magi-Klean is suitable for decalcifying pumps or any other piece of equipment that can be easily removed from the aquarium. Can be used on pumps, skimmers, heaters, filters, pipework, etc. Magi-Klean removes even the toughest lime/calcium deposits in... more

    $11.96

    FREE shipping

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