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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

    $34.61

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    TSCPets

    (1,000+)
    Hydor 200W Submersible Glass Aquarium Heater - Original Theo

    Hydor 200W Submersible Glass Aquarium Heater - Original Theo

    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

    $21.24

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    THEO Heater - 200W - Up to 53 gal.

    THEO Heater - 200W - Up to 53 gal.

    Provide your tank with the proper temperature with the most advanced heating technology available. THEO heaters are designed with a peculiar cylindrical shape that renders them virtually shatterproof. Fully submersible; THEO heaters function with the... more

    $27.99

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    (50,000+)
    Hydor 25W Submersible Glass Aquarium Heater - Original Theo

    Hydor 25W Submersible Glass Aquarium Heater - Original Theo

    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

    $20.99

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    Hydor 50W Submersible Glass Aquarium Heater - Original Theo

    Hydor 50W Submersible Glass Aquarium Heater - Original Theo

    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

    $16.99

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

    Hydor ETH 200 In-Line External Aquarium 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

    $54.98

    FREE shipping

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    ETH 200 In-Line Heater for 12mm or .5 in. Tubing - 200W

    ETH 200 In-Line Heater for 12mm or .5 in. Tubing - 200W

    The ETH external In-Line heater uses the advanced PTC system; which is a special polymer sheet silk-screened with heating ink (like your car's windshield defroster) instead of metal coils. This state-of-the-art system allows the unit to be left running... more

    $49.95

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    (50,000+)
    Hydor Usa Inc. Theo 400 Watt Submersible Shatterproof Heater 15.5" Hy0

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

    Hydor USA Inc. Theo 400 Watt Submersible Shatterproof Heater 15.5" HY00320 more

    $29.95

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    TSCPets

    (1,000+)
    ETH 201 In-Line Heater for 16mm or .625 in. Tubing - 200W

    ETH 201 In-Line Heater for 16mm or .625 in. Tubing - 200W

    The ETH external In-Line heater uses the advanced PTC system; which is a special polymer sheet silk-screened with heating ink (like your car's windshield defroster) instead of metal coils. This state-of-the-art system allows the unit to be left running... more

    $49.95

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    (50,000+)
    THEO Heater - 100W - Up to 26 gal.

    THEO Heater - 100W - Up to 26 gal.

    Provide your tank with the proper temperature with the most advanced heating technology available. THEO heaters are designed with a peculiar cylindrical shape that renders them virtually shatterproof. Fully submersible; THEO heaters function with the... more

    $23.99

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    (50,000+)
    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

    FREE shipping

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    Hydor 200W Submersible Aquarium Heater - Original Theo

    Hydor 200W Submersible Aquarium Heater - Original Theo

    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'' more

    $27.05

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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 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 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 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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    "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

    FREE shipping

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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

    FREE shipping

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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

    FREE shipping

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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 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 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

    FREE shipping

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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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    "Hydor Usa Inc-Theo Shatterproof Heater 200 Watt"

    "Hydor Usa Inc-Theo Shatterproof Heater 200 Watt"

    "THEO SHATTERPROOF HEATERAquarium heater ideal for up to 100 gallon tanks.UPC : 841421000367Size : 200 WATTLength : 3.5Width : 2Height : 14.5Product Type : Aquatics - Heaters / SubmersibleShipping Dimensions: 3.5x2x14.5" more

    $36.99

    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 Theo Heater 25 watt

    Hydor Theo Heater 25 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

    $13.58

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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

    FREE shipping

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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

    FREE shipping

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    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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    (25,000+)
    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 Theo Heater 300 Watt Submersible

    Hydor Theo Heater 300 Watt Submersible

    Hydor THEO (UL) Submersible Aquarium Heater The Hydor Theo trade aquarium heater features PTC patented thermal technology which makes it among the safest aquarium heater lines on the market. The patented PTC heating system guarantees operation in... more

    $20.99

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    "Theo Shatterproof Heater, Color: Clear, Size: 150 WATT, UPC# 841421003214, Mfg# T11602, Free Shippi"

    "Theo Shatterproof Heater, Color: Clear, Size: 150 WATT, UPC# 841421003214, Mfg# T11602, Free Shippi"

    "Theo Shatterproof Heater Color: Clear Size: 150 WATT Miscellaneous AquariamMade for aquariums up to 40 gal completely submersible, safe and shatterproof.Temperature controlled and maintained by a highly precise micro-switch, ptc element.Can be used... more

    $41.18

    FREE shipping

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    "Theo Shatterproof Heater, Color: Clear, Size: 400 WATT, UPC# 841421003207, Mfg# T11502, Free Shippi"

    "Theo Shatterproof Heater, Color: Clear, Size: 400 WATT, UPC# 841421003207, Mfg# T11502, Free Shippi"

    "Theo Shatterproof Heater Color: Clear Size: 400 WATT Miscellaneous AquariamUse in aquariums up to 200 gal completely submersible.All items are brand new, never worn and never used. We guarantee the authenticity of all items.Thank you for shopping at... more

    $48.96

    FREE shipping

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    "Theo Shatterproof Heater, Size: 100 WATT, UPC# 841421000350, Mfg# T11202, Free Shipping"

    "Theo Shatterproof Heater, Size: 100 WATT, UPC# 841421000350, Mfg# T11202, Free Shipping"

    "Theo Shatterproof Heater Size: 100 WATT Miscellaneous AquariamAquarium heater ideal for up to 50 gallon tanks.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... more

    $38.24

    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

    $34.61

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