Review on 🐠 MQ Titanium Alloy Aquarium Heater: 200/300/500W, Digital LED Display, Submersible with External Thermostat - Perfect for Salt and Fresh Water Tanks by Kimberly Jain

I've only had this heater for about 30 days, so far so good. I use it to heat a 100 liter tank and it does a pretty good job. I had the tank outside in 50 degree weather and had no problem keeping the temperature at 70 degrees. I really like the digital display on the heater itself. It's well built. The only reason I didn't give it 5 stars is because it only lasted 30 days. I will update in 6 months. If it continues to run smoothly, it deserves 5 stars.