![Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies](https://m.media-amazon.com/images/I/41e3wVvtm1L._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingTHREEANDHALF%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA781%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies
Aquariums India - HYDOR External Aquarium Heater ~~~~~~~~~~~~~~~~~~~~~~ The first compact aquarium heater that operates externally, saving interior aquarium space. Installs vertically in the return line of a canister filter or sump,
![Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies](https://m.media-amazon.com/images/I/812pkFj2f+L.jpg)
Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies
![Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 5/8" hose - Original ETH 201 : Aquarium Heaters : Pet Supplies Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 5/8" hose - Original ETH 201 : Aquarium Heaters : Pet Supplies](https://m.media-amazon.com/images/I/71qFSDJ4NOL.jpg)
Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 5/8" hose - Original ETH 201 : Aquarium Heaters : Pet Supplies
![Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies Amazon.com : Hydor ETH 200 In-Line External Aquarium Heater, 200w, 1/2" hose : Aquarium Heaters : Pet Supplies](https://m.media-amazon.com/images/I/61lTqKjNxmL.jpg)