Review on 🐠 Enhance Your Aquarium Experience with Penn-Plax Deluxe Submersible Heater - Digital LED, 300-800 Watts for Optimal Warmth by Brianna Kamp

This heater has lasted 1 year and 1 month so far. Your warranty is conveniently 1 year. This year and month it worked fine and showed about 1 degree warmer than the actual water temperature. Then last night I fed my fish and the reading was 90 degrees Fahrenheit. The aquarium thermometer read 88 and confirmed with an infrared thermometer which read 89. There was condensation on the glass. Luckily this happened while I was home as this tank was my little mbu puffer tank and I was able to salvage it.