![Amazon.com : Hydor Theo Shatterproof Aquarium Heater, 50-Watt & Ideal For 5 To 14 Gallon Fish Tanks, 7-Inches Long : Pet Supplies Amazon.com : Hydor Theo Shatterproof Aquarium Heater, 50-Watt & Ideal For 5 To 14 Gallon Fish Tanks, 7-Inches Long : Pet Supplies](https://m.media-amazon.com/images/I/41nrM6In9rL._SR600%2C315_PIWhiteStrip%2CBottomLeft%2C0%2C35_PIStarRatingFOUR%2CBottomLeft%2C360%2C-6_SR600%2C315_ZA2%252C240%2C445%2C290%2C400%2C400%2CAmazonEmberBold%2C12%2C4%2C0%2C0%2C5_SCLZZZZZZZ_FMpng_BG255%2C255%2C255.jpg)
Amazon.com : Hydor Theo Shatterproof Aquarium Heater, 50-Watt & Ideal For 5 To 14 Gallon Fish Tanks, 7-Inches Long : Pet Supplies
![Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 3.5 inches round, black; For tanks 2-5 gallons : Pet Supplies Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 3.5 inches round, black; For tanks 2-5 gallons : Pet Supplies](https://images-na.ssl-images-amazon.com/images/I/819JO3CzYOL._AC_UL210_SR210,210_.jpg)
Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 3.5 inches round, black; For tanks 2-5 gallons : Pet Supplies
![Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies](https://m.media-amazon.com/images/S/aplus-media/vc/2972c4de-1c95-4da0-8112-74ad4bfc4601.__CR58,58,583,583_PT0_SX300_V1___.jpg)
Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies
![Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies](https://m.media-amazon.com/images/I/81UGPK4rEmL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies
![Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies](https://m.media-amazon.com/images/I/81UGPK4rEmL.jpg)
Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons : Pet Supplies
![Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 3.5 inches round, black; For tanks 2-5 gallons : Pet Supplies Amazon.com: Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 3.5 inches round, black; For tanks 2-5 gallons : Pet Supplies](https://m.media-amazon.com/images/I/819JO3CzYOL._AC_UF1000,1000_QL80_.jpg)