HTSPPXT Aquarium Heater, 100W/200W/300W/500W Adjustable Fish Tank Heater with Intelligent Digital LED Controller, Overheating and Out of Water Protection for Freshwater and Saltwater Tanks

Hydor Betta Bowl Slim Fish Tank Heater, 7.5-watt, measures 5.4L x 2.5W inches oval, black; For tanks 2-5 gallons

MantaMaze Submersible Aquarium Heater 25W/50W/75W/100W for 1-25 Gallon Fish Tank Heater with Intelligent Leaving Water Automatica Stop Heating System & Overheating Protection, for Fresh & Salt Water

Liveek Aquarium Fan 2 3 4 Heads, Aquarium Chillers Cooling Fan Adjustable Fish Tank Cooling Fan with 2 Wind Speed Fan for Water Tank, Aquarium Tank Chiller (3 Head)

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

DaToo Small Aquarium Heater 100W Mini Fish Tank Heater 100 Watt Submersible with LED Temperature Display

auomii Small Submersible Aquarium Heater,Adjustable Mini Fish Tank Heater 25/50/100/150/200/300 Watts with External Temperature Controller, LED Display, Smart Memory, Used for 1-60 Gallons (100W)

DaToo Aquarium Heater Adjustable 25W Submersible Fish Tank Heater with Electronic Chip Thermostat Suitable for Marine Saltwater and Freshwater

Aquarium Heater,25W Fish Tank Heater with Over-Temperature Protection, Submersible Aquarium Heater with LED Digital Display&2 Suction Cups for 4 Gallon Fish Tank

AquaMiracle Upgraded 200W Aquarium Heater Fish Tank Heater Turtle Heater Super Compact Aquarium Heater, Dry-Run/Overheating Protection and Memory Function, Dual LED Display, for 20-40 Gal Tanks