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    Best Seller
    Hydor Slim Heater for Micro Tanks & Mini Aquariums 7.5 Watt - 2-5 Gallons

    Hydor Slim Heater for Micro Tanks & Mini Aquariums 7.5 Watt - 2-5 Gallons

    Hydor Slim Heater for Micro Tanks & Mini Aquariums 7.5 Watt - 2-5 Gallons more

    $13.59

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    Hydor 7.5w Slim Heater for Bettas and Bowls, 2 to 5 gal

    Hydor 7.5w Slim Heater for Bettas and Bowls, 2 to 5 gal

    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

    $6.49

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    Best Seller
    Hydor 15w Slim Heater for Bettas and Aquariums, 5 to 10 GAL

    Hydor 15w Slim Heater for Bettas and Aquariums, 5 to 10 GAL

    Hydor 15-watt slim heater helps guarantee your fish a healthy life by promoting the ideal water temperature. Specially designed with the innovative positive thermal coefficient element to heat the temperature of your aquarium or terrarium an average of... more

    $7.01

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    Hydor T20401 4W Slim Aquarium Heater, Black, 3" x 0.25"

    Hydor T20401 4W Slim Aquarium Heater, Black, 3" x 0.25"

    Hydro Slim Heater helps guarantee your fish a healthy life by promoting the ideal water temperature. Specially designed with the innovative PTC Film (Positive Thermal Coefficient) element to heat the temperature of your bowl, aquarium or terrarium an... more

    $19.31

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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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    Slim Heater for Mini Aquariums - 7.5W - Up to 5 gal.

    Slim Heater for Mini Aquariums - 7.5W - Up to 5 gal.

    A 7.5 watt Slim Heater is ideal for your mini or micro tropical aquarium up to 5 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

    $16.49

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    Hydor 7.5W Slim Heater For Bettas And Bowls 2 To 5 Gal (Pack of 1)

    Hydor 7.5W Slim Heater For Bettas And Bowls 2 To 5 Gal (Pack of 1)

    Hydor 7.5W Slim Heater For Bettas And Bowls 2 To 5 Gal (Pack of 1) more

    $20.98

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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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    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    100W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 8.9 . For aquariums 14-26 gallons.Length - 8.9 Part... more

    $33.36

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    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    100W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 8.9 . For aquariums 14-26 gallons.Length - 8.9 Part... more

    $33.36

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    Peazz

    (100+)
    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    100W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 8.9 . For aquariums 14-26 gallons.Length - 8.9 Part... more

    $33.36

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    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    50W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 7 . For aquariums 5-14 gallons.Length - 7 Part #:... more

    $33.36

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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+)
    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    50W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 7 . For aquariums 5-14 gallons.Length - 7 Part #:... more

    $33.36

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    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    300W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 53-80 gallons.Length - 15.5 Part #: AHY00037Item Name: Theo... more

    $34.61

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    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    50W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 7 . For aquariums 5-14 gallons.Length - 7 Part #:... more

    $33.36

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    Peazz

    (100+)
    Hydor 7.5w Slim Heater for Bettas and Bowls, 2 to 5 gal

    Hydor 7.5w Slim Heater for Bettas and Bowls, 2 to 5 gal

    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 Slim Heater for Micro Tanks & Mini Aquariums - T20301

    Hydor Slim Heater for Micro Tanks & Mini Aquariums - T20301

    Helps increase by a few degrees Fahrenheit/Celsius the water temperature of mini aquariums compared to the room temperature where they are positioned. Aquariums 5-10 Gallons (15 Watts) more

    $9.97

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    Hydor Slim Heater for Micro Tanks & Mini Aquariums - T20201

    Hydor Slim Heater for Micro Tanks & Mini Aquariums - T20201

    Helps increase by a few degrees Fahrenheit/Celsius the water temperature of mini aquariums compared to the room temperature where they are positioned. Aquariums 2-5 Gallons (7.5 Watts) more

    $8.97

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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 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 Theo Heater - Submersible Aquarium Heater - T11702

    Hydor Theo Heater - Submersible Aquarium Heater - T11702

    Submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. 25 Wats - 6.9" Long (2-7 Gallons) more

    $19.97

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    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    100W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 8.9". For aquariums 14-26 gallons.Length - 8.9"Part... more

    $24.95

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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

    $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

    $25.95

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    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    300W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 53-80 gallons.Length - 15.5"Part #: AHY00037Item Name: Theo... more

    $25.95

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    "Hydor Usa Inc-Theo Shatterproof Heater- Clear 150 Watt"

    "Hydor Usa Inc-Theo Shatterproof Heater- Clear 150 Watt"

    "THEO SHATTERPROOF HEATERMade 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 positioned inside some hydor filters.UPC :... more

    $34.99

    FREE shipping

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    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    300W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 53-80 gallons.Length - 15.5 Part #: AHY00037Item Name: Theo... more

    $34.61

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    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    Hydor Usa Inc. Theo 100 Watt Submersible Shatterproof Heater 8.9" Hy00035

    100W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 8.9 . For aquariums 14-26 gallons.Length - 8.9 Part... more

    $33.36

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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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    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    300W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 53-80 gallons.Length - 15.5 Part #: AHY00037Item 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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    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    Hydor Usa Inc. Theo 300 Watt Submersible Shatterproof Heater 15.5" Hy00037

    300W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. For aquariums 53-80 gallons.Length - 15.5 Part #: AHY00037Item Name: Theo... more

    $34.61

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    Peazz

    (100+)
    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

    $14.39

    FREE shipping

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    Hydor Theo Heater - Submersible Aquarium Heater - T11102

    Hydor Theo Heater - Submersible Aquarium Heater - T11102

    Submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. 50 Watts - 7" Long (5-14 Gallons) more

    $21.97

    FREE shipping

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    Hydor Theo Heater - Submersible Aquarium Heater - T11502

    Hydor Theo Heater - Submersible Aquarium Heater - T11502

    Submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. 400 Wats - 15.5" Long (80-105 Gallons) more

    $29.97

    FREE shipping

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    Hydor Theo Heater - Submersible Aquarium Heater - T11402

    Hydor Theo Heater - Submersible Aquarium Heater - T11402

    Submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. 300 Watts - 15.5" Long (53-80 Gallons) more

    $27.97

    FREE shipping

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    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    50W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 7". For aquariums 5-14 gallons.Length - 7"Part #:... more

    $24.95

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    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    Hydor Usa Inc. Theo 50 Watt Submersible Shatterproof Heater 7" Hy00034

    50W submersible aquarium heater. UL listed. Safe and reliable. Made from specially enginereed shatterproof glass. Temperature controlled and maintained by precise micro-switch. Extremely compact at 7 . For aquariums 5-14 gallons.Length - 7 Part #:... more

    $33.36

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