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!

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.

At first the thermometer was not working - just kept reading 79.6. Decided to clean the tank and noticed the numbers on this one was hazy (had not removed it yet since was suction cupped in). I replaced the battery just to see and sure enough it started working. So - if you don't see the numbers moving replace the battery. Don't know if it was due to the original battery being a problem or if it was reset by replacing the battery.

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.

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!

I've had this product for a few months now and in the beginning I really liked how it performed. It suctioned well to the glass and it was easy to read. As time went on I noticed the temperature was going down. I thought my heater my shutting down, but when I felt the water, it was warm and where it should be. I soon realized this thermostat was malfunctioning. It might just be the one I received so I might buy another one and try it again. I'm hoping I got a dud because I really liked this product and how easy it was to set up. I will update if I have better results next time around.

I ordered this thermometer so that we can watch what the water temperature is for our fish. Our last fish died, due to too cold of water temp. I ordered a heater to better regulate the water temperature. We will soon be adding our fish. I didn't want to get a fish until I tested the heater and so far the water temp has gone up 10 degrees and holding at that. The thermometer is easy to use, and the suction cup adheres to the side of the acrylic tank and hasn't been a problem. The digital part is on the outside of the tank and is easy to read.