Hidom Aquarium Heater Quartz Glass Submersible Fish Tank - 75w Thermostat Control Pro-Heat HT 8075 - With FREE Stick on Thermometer - Suitable for both fresh and salt water

Sgizoku 100W Aquarium Heater - Fish Tank Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water - Use for 40-100L Saltwater and Freshwater Aquarium (100W)

FEDOUR Mini Aquarium Heater 50W 100W, Submersible Fish Tank Heater with Thermometer, Shatterproof Heater for Saltwater and Fresh Water, Betta Heater (50W)

Luxvista 100W Fish Tank Heater Small Aquarium Heater Submersible Turtle Tank Heater, Digital LED Display of Water Temperature, for 35-80L Tanks, for Tropical Fish/Freshwater Fish/Betta Fish/Turtle

NICREW Submersible Aquarium Heater, Electronic Fish Tank Heater with External Temperature Controller, for Freshwater and Saltwater Tanks up to 40 Liters, 50W

Sgizoku 300W Aquarium Heater with Over-Temperature Protection and Automatic Power-Off When Leaving Water - Fish Tank Heater Use for Saltwater and Freshwater Aquarium

Bonlux Submersible Aquarium Heater, 50W Mini Fish Turtle Tank Heater Temperature Adjustable with Thermometer, Supports up to 60L Water with 2X Sucker Cup, BS Plug, 0.9M Cable

hygger Aquarium Heater, 200W Submersible Fish Tank Thermostat Heater with Adjust Knob Suction Cup for Small Betta Coral Saltwater and Freshwater

HITOP Submersible Aquarium Heater 25W 50W With Thermometer and Extra Sucker Cup