Best Aquarium heater for 5 gallon tank

Tetra HT Submersible Aquarium Heater With Electronic Thermostat, 50-Watt

NICREW Aquarium Heater 50W, Temperature Adjustable Fish Tank Heater with Controller for 5-10 Gallon, Overheat Protection

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

Fluval M50 Submersible Heater, 50-Watt Heater for Aquariums up to 15 Gal., A781

Eheim Jager TruTemp Submersible Heater - 50 W

YukiHalu Small Submersible Aquarium Heater, Adjustable Mini Fish Tank Heater 25W 50W 100W 200W 300W with External Temperature Controller, LED Display, Used for 5/10/20/40/60 Gallons (25 Watts)

Abhirsh Aquarium Heater 50 Watt - Reliable Fish Tank and Immersion Water Heater, Adjustable Temperature Submersible Thermostat Heater for 5-20 Gallon

hygger Marine 50W Titanium Aquarium Heater for Salt Water and Fresh Water, Digital Submersible Heater with External IC Thermostat Controller and Thermometer, Fish Tank Heater for Fish Tank 5-10 Gallon

AquaMiracle Adjustable 50W Aquarium Heater Submersible Fish Tank Heater Super Short Aquarium Heater with LED Digital Display Thermostat, for Tanks 5-10 Gallons

Hagen Fluval Marina Submersible Heater for Aquarium, 50W