Home5 Watt Aquarium Heaters Top 8 Best 5 Watt Aquarium Heaters #1 Zoo Med BettaTherm Submersible Betta Bowl Heater 7.5 Watts 9.8 SCORE View Detail Buy it on Amazon ✔Fits most fish or Betta bowls✔Now with Thermal Shut Off at 26 degrees Celcius More Detail+ #2 Aqueon Flat Submersible Heater 7.5 Watts 9.5 SCORE View Detail Buy it on Amazon ✔7.5 Watt works best for 1 to 3 gallon fish tanks✔Note: Do NOT operate or leave product plugged in when it is outside of water✔Shatterproof construction✔Vertical or horizontal placement using suction cups that mount to the bottom or side wall of tank✔ More Detail+ #3 SunGrow Betta Heater, 10W, Fully Submersible Aquarium Heater for Small Tanks 9.3 SCORE View Detail Buy it on Amazon #4 Aqueon Mini Aquarium Heater, 10 Watts, Up to 5 Gallons 9.0 SCORE View Detail Buy it on Amazon ✔Thermal safety shut-off✔Shatterproof and nearly indestructible✔ More Detail+ #5 Aqueon Fish Tank Mini Heater, 10-watt, Plastic 8.4 SCORE View Detail Buy it on Amazon ✔Features thermal safety shut-off✔Perfect size heater for Aqeuon Mini Bows and other small aquariums More Detail+ #6 SunGrow Halfmoon Betta Heater, 10 Watts, for Small Tanks, Fully Submersible 8.2 SCORE View Detail Buy it on Amazon ✔✔ FULLY SUBMERSIBLE WATER HEATER--- This 10-watt aquarium heater supports 1.5 gallons (5 liters) fish tank. Its exterior is designed tougher than glass and the sealed polymer can be submerged into your tank. The heating element is surrounded by thick plastic to ensure the protection of your fish. More Detail+ #7 - 38% Deal Aqueon Submersible Aquatic Flat Heater 15 Watts 7.9 SCORE View Detail Buy it on Amazon ✔15 watt is best for 4 to 10 gallon fish tanks✔Note: Do NOT operate or leave product plugged in when it is outside of water✔Shatterproof construction✔Vertical or horizontal placement using suction cups that mount to the bottom or side wall of tank✔ More Detail+ #8 ZEETOON 25W Aquarium Heater, Automatic Thermostat Betta Fish Tank Heaters, Tortoise 7.5 SCORE View Detail Buy it on Amazon Recommended Categories related to 5 Watt Aquarium Heaters Hunter Sprin... Zumba DVDs Electric Dir... 4 Wheel Shop... Hp Bluetooth... Editor’s Pick: Trending Products you will love Hp Bluetooth Wireless Printers Dec. HP OfficeJet Pro 9015e Wireless Color All-in-One Printer with 6 Months Free Ink (1G5L3A) (Renewed Premium), Gray $109.99 View Detail - 19% Hp Bluetooth Wireless Printers Dec. HP Envy 6055e Wireless Color All-in-One Printer with 6 Months Free Ink (223N1A) (Renewed Premium),white $71.99 $57.99 View Detail - 18% Hp Bluetooth Wireless Printers Dec. HP OfficeJet 250 All-in-One Portable Printer with Wireless & Mobile Printing, Works with Alexa (CZ992A) Black $489.99 $399.89 View Detail Hp Bluetooth Wireless Printers Dec. HP LaserJet Pro 3001dw Wireless Black & White Printer, Works with Alexa $199.00 View Detail