| Seller | Seller rating | Notes | Tax & Shipping | Price | |
 1-888-438-9110
Big Al's Online
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Rating (4.64/5)
120 reviews
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The self-limiting PTC heating element guarantees maximum safety against any risk of overheating. The exclusive technology and the high quality of the components guarantee a long lasting product.
FREE SHIPPING on orders over $75
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$52.99
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(In stock)
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1-888-9-WEBPETS
PetStore.com
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Rating (4.82/5)
17 reviews
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ETH 300 In-Line Heater UL Listed 300 Watt for 16mm & 5/8' HoseExternal thermal heater which includes the PTC system. Suitable for all external canister filtersThe Hydor ETH in-line external heater 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.... More Info
In Stock- Ready To Ship
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$64.98
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(In stock)
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1.800.737.3868
PetSolutions
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Rating (3.67/5)
3 reviews
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The new sleek design of the Hydor ETH External Thermal Aquarium Heater allows you to add a fish tank heater without anyone seeing it. This ingenious design attaches inline with your canister filter or return pump. With 5/8 input and outputs, this exte... More Info
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$55.99
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(Out of stock)
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Amazon Marketplace
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☼ Trusted Store
Rating (2.75/5)
234 reviews
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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 filters or sumps.... More Info
Fantastic prices with ease & comfort of Amazon.com!
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$50.50
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(In stock)
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Amazon Marketplace
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☼ Trusted Store
Rating (2.75/5)
234 reviews
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300W 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 temperature variations caused by poor water circulation. UL listed. . Reliable and simple to use. Extremely accurate. Suitable for freshwater and . saltwater aquariums. Ideal for tropical fish breeding situations. For aquariums . 53-80 gallons. Length - 12... More Info
Fantastic prices with ease & comfort of Amazon.com!
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$59.99
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(In stock)
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Amazon Marketplace
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☼ Trusted Store
Rating (2.75/5)
234 reviews
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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 with a switch that shuts the unit off before overheating. This allows for the heater to run dry for short periods of time without fear of damage. the Hydor ETH Submersible Heater is reliable and simple to use and is extremely accurate. This unit is meant for aquariums between 53-80 gallons Product Features: Easy to use and very reliable This heater is designed for marine and tropical aquariums. The ETH allows unit to go for short periods of time dry without fear of damage It is suitable for aquariums from 58 - 80 gallons. Item Specifications: Size: 16mm Aquarium Size: 53-80 Gallon... More Info
Fantastic prices with ease & comfort of Amazon.com!
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$62.00
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(In stock)
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(1 total review)