Aquarium Thermometer LCD Digital Aquarium Thermometer with Suction Cup Fish Tank Water Terrarium Temperature for Fish and Reptiles Like Lizard and Turtle

Everything works well! I really liked that this package came with 2 working batteries so I didn't have to go on a scavenger hunt to find these certain batteries. My fish loves to squeeze into every small space possible and so she's managed to separate the heater from the wall, but she's yet to accomplish that with these suction cups! The thermometer works super well, I only wish there was an LED option where it's easier to read. When the lights are on, it's legible, but at night when everyone is most wary of leaving their heaters on, I can't read it so I'm always using the flashlight on my phone to read the numbers. Only a slight inconvenience, but not large enough to hate on it. I've only had it for 4 days now, but it works super well and I love that it's small! Update: it's been over a month since I've bought it and I've yet to have any issue with it overheating. Occasionally, I may notice that it's a little warm (if it gets to be near 83 degrees, that's when I open a window or something, I don't use the AC or heater in my apartment). I have yet to unplug it other than when I clean the tank!

This worked for many 6 years and I liked this product. I would buy this one again.

Unit is good for what it is and appears to be accurate enough for my needs. I like that it comes with the batteries and suction cups for both the unit and the probe that attaches inside the aquarium. I normally just turn it on as needed when I want to view the aquarium's temperature and then shut if off to conserve batteries. Temp accuracy-wise, I'd say it is not spot on, but close enough when I compare it with other thermometers when checking the water temps. Time will tell how sturdy the button is with all this turning on and off, but in my case, I would only check the aquarium's temp once or every other day or so, as I also have a standard glass thermometer inside the aquarium. Overall a good buy and worth it.

The instructions left a lot to be desired. At first I was getting crazy readouts which had me concerned. I submerged the thermometer lower in the water. Do not put it too close to the heater. I found this out the hard way.

Don’t mind my green tank! This was very easy to use and set up. You can do Celsius or Fahrenheit. You simply put the probe halfway down your tank in the water so you keep an accurate temperature status and put the other side on the outside of your tank and you can keep track of your temperature digitally. This is important because we are getting an axolotl and you have to keep the temperature cold so we wanted something that would be extremely accurate for his environment. I think it is extremely easy to set up and great for any beginner to be able to keep track of their tank temperature. I give it five stars because it is so easy to use and it’s extremely accurate from everything that I have been able to check.

This works well. I have the probe hanging near the intake for my hang on back filter, so you don't notice it much. Comparing the temperature to my other thermometers that I trust, I am getting readings within 0.1 degrees on each of them, so I am confident this is giving me accurate temperatures. The suction cups that come with it work well. One was a little deformed from the packaging, but it still functions great.

Perfect little thermometer for my tank. Had it for a few months now and still going strong so battery life is good, it was easy to put in and move where I needed it to be. It works super well and is a nice size that it doesn’t take over the tank so it looks good. Definitely worth the money!

It doesn't have good accuracy and lasted only a couple of months. I bought several units, and they all behaved equally badly.