🐠 JJMG LCD Digital Stick-on Fish Tank Thermometer: Easy Installation, Temperature Monitoring for Aquariums, Terrariums, and More Review

I didn't like the product, after a while the suction power stopped working and the thermometer kept falling out of the aquarium. I would like them replaced at no additional cost

Temperature measurements were good after installation. A week later it got stuck at 75 degrees. Apparently I've waited too long to use it and the return period has expired. Stuck with trash.

I like that it was easy to install and digital so very easy to read. Our aquatic turtle is happy and this thermometer helps us keep track of how we are maintaining the optimal temperature in the aquarium.

Adheres to the outside of the aquarium pane. Seems like a good idea, it's not very accurate at measuring water temperature. There is also no way to calibrate. I find it great for measuring the temperature of glass surfaces.

Looks great in my 100 gallon reef tank. During the day you can see the temperature perfectly, but at night and in low light it is very difficult to read. Also, it's not that accurate, it's off by a degree or two. My tank is 3/8" glass so none of the outside temp gauges read properly.

Looks great on my 75 gallon tank. It adhered perfectly to the tank and quickly changed temperature. However, this is a few degrees. I checked with two other thermometers that showed 76 degrees in the same range. This counter only shows 73. Pretty much useless if not accurate.

This thermometer is stylish and easy to read. I only gave it 4 stars because I feel like the company could add a few sets of instructions to this item. Instead, the box contains one-sentence instructions. Not that it was difficult, but I had to figure out how to open the thermometer to insert the small battery I found in the box. Unlike the above, this item looks good, is relatively accurate, and is easy to read.

Like all external thermometers, this one reads glass temperature and not water temperature. After several weeks of comparisons with another digital thermometer used in the aquarium, I found that the water was about 0.5 degrees warmer than the glass reading. I would rate this as an accurate read. It's a bit larger and not as inconspicuous as I expected (due to my poor visual skills, not the company - their description is accurate), so I mounted mine on the side of the tank. Even there, my…