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About This Item
- Perfect for freshwater or saltwater use
- Accurate and easy to read, provides readings in Centigrade and Fahrenheit
- Safety zone indicator for most tropical fish
- Helps protect your fish from unsafe temperatures
- Designed to float in the water in a vertical position or includes an optional suction cup
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Compare Similar Items
 |  | | |
| Customer Rating | |||
| Price | $2.99Chewy Price | $5.80Chewy Price | $4.85Chewy Price |
| Autoship | — | $5.51Chewy Price | $4.61Chewy Price |
| Aquarium Type | Freshwater, Saltwater | Freshwater, Saltwater | Freshwater, Saltwater |
| Fish Type | Tropical Freshwater, Marine Fish | Betta, Goldfish, Cichlid... | Betta, Goldfish, Cichlid... |
| Material | Plastic | Plastic | Plastic |
| Capacity (Max) | — | — | N/A |
13 Customer Questions
ReviewsWrite a Review
141 Customer Reviews
Good for the Money
An inexpensive thermometer that works. Put the thermometer in my 55 gallon tank, and the thermometer gave an accurate reading based on my heater settings. The only problem is it's a little hard to read, though the Safe Zone, 70°F to 80°F, is well marked in red. I run my tank at 79°F, and the thermometer went right there and stayed. For the price what more could you want? I used the suction cup to hold my heater. This after having another, older floating thermometer in another tank, that always seems to drift to the back of the aquarium, or is turned away from the front. Looks good, works well, for a nice low price.
perfect size easy to read
It’s a perfect size for my 3 gallon tank, easy to read. Love that it’s has the green lines to show where the temp should be!
Inaccurate and tiny
The reading is incorrect when compared with other thermometers and it's so tiny I can hardly read it even with my glasses.
accurate!!!!
i’ve had it for a while now and it’s stays perfectly and always reads the same temp as my heater.
Works perfectly !
I will admit, The reviews had me scared. But this is totally worth it. As someone who doesn’t have a heater in their tank but uses natural sunlight ( snail tank ), this is awesome ! The strip ones that go on the outside of the tank are never accurate and have scared me before with an accurate measurements. It’s nice to finally have a thermometer that works. I feel like the reason why this gets bad reviews is because it takes a while to adjust to fluctuations. But that’s normal for a lot of thermometers. If you have very frequent fluctuations, I wouldn’t get this, but if you have a room temperature tank or a heated tank, I would highly recommend this !
The thermometer is fine but...
It was shipped all by itself in a box meant for 100x as many thermometers. My 2 year old made the box into a car, so I guess it worked out?
Aquarium heater
This heater is ok but difficult to read if you are much over 40.
Double check
I use a basic, reliable thermometer to double check the digital ones. This one works great!
The Best***
These little thermometers are reliable, unlike electronic ones or stick to glass ones. I’ve used all of these & always come back to the floating thermometers. Always rely on Chewy for pet products. They are The Best too!
Dose the job
It’s kinda hard to read but it sticks to the tank well and it’s pretty small doesn’t take to much space and doesn’t bother the snails
