Zacro LCD Digital Aquarium Thermometer Fish Tank Water Terrarium Temperature

As others have said, don’t get this if you need to see temp readings at night because there’s no backlight. Otherwise these are fantastic for the price. Other reviews are critical of the accuracy, and you will see those reviews repeated on every single aquarium thermometer listing on this website. If you need to use a thermometer that is accurate down to the exact degree, then you need to spend good money on a scientific one that requires calibration. I don’t know why people expect perfection from products at this price point. For most use cases, being 1-2 degrees off is not a big deal. All I need from this product is to monitor wild swings in temperature for example if my heater breaks or I don’t realize the water level has dropped to not fully cover the heater anymore. I also realized it is useful to have a temperature reading from the exact opposite side of the tank furthest from the heater, to test if the heater is heating the entire tank properly. I already had a black thermometer sticker on the tank, but I realized I was never looking at it because it’s so subtle, which defeats the purpose of having it there. I was very grateful to have this digital thermometer when I noticed it said the tank had dropped to 71 from 77; I realized I hadn’t topped off the water enough for the heater to do its job, and I actually decided to move the heater down into the tank more for this reason. If I’d only had the sticker to go by, I probably wouldn’t have noticed for days or worse until the next top off time.