Best Fluval Heaters

Orlushy Submersible Aquarium Heater,300W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine Saltwater and Freshwater

HiTauing Aquarium Heater, 50W/100W/200W/300W/500W Submersible Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water for Saltwater and Freshwater

hygger Aquarium Heater 300W/500W/800W/1000W, Submersible Fish Tank Heater with Digital LED Controller and Intelligent Leaving Water Automatically Stop Heating System, for Freshwater and Saltwater

Fluval E 300 Watt Electronic Heater

Aqueon Pro 300 Submersible Aquarium Fish Tank Heater, 300 Watts, For Up To 100 Gallon Fish Tanks

YukiHalu Aquarium Heater 50/100/200/300/500W with Protective Case, Fish Tank Heater, Temperature Adjustable, External Temperature Controller, LED Display, Used for 10/20/40/75/120 Gallons (300W)

HITOP Mini Submersible Aquarium Heater -100W Digital Heater for Fish Tank Turtle Tank 10-25 Gallon，Saltwater and Fresh Water with Temperature Controller (100W)

Marineland Precision Heater for Saltwater or Freshwater Aquariums

Cobalt Aquatics Neo-Therm Pro Aquarium Heater, Made in Europe, Fish Tank Heater for Freshwater or Saltwater Tanks, Turtle Tank Heater, Submersible, Auto Shutoff, Temperature Controller Thermostat 75W

Fluval M50 Ultra-Slim Submersible Aquarium Heater – 50W Underwater Heater for Aquariums up to 15 Gal.