FishCheers Preset 78℉ Aquarium Heater 250W,Submersible Thermostat Aquarium Heater for 75-85Gallon Fish Tank Suitable for Saltwater and Freshwater Aquariums : Amazon.ca: Pet Supplies
Aquatop 250W Thermo-Quartz Electronic Heater - Fully Submersible for Fish Tanks Up to 85 Gallons, Preset 78F Electric Thermostat, Fresh & Saltwater Use, Aquarium Heaters, TQ-250W : Amazon.ca: Pet Supplies
Best Aquarium Heater Tested (MOST Safe & Accurate 2023)
Eheim Jager TruTemp Submersible Heater - 250 W | Big Als