

🌊 Stay cool, stay precise — your fish deserve the best!
The Petbank LCD Digital Aquarium Thermometer offers ultra-precise temperature monitoring with 0.1°C accuracy and a quick 3-second response time. Featuring a large, easy-to-read LCD screen and a compact, sleek design, it discreetly attaches to your tank via suction cup. Powered by an included LR44 battery, it operates reliably within a broad temperature range (-10°C to 50°C), making it ideal for aquariums and terrariums alike. Trusted by thousands for effortless, accurate aquatic care.














| ASIN | B01A0TMS6Y |
| Additional Features | High Accuracy |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #11,643 in Pet Supplies ( See Top 100 in Pet Supplies ) #11 in Aquarium Thermometers |
| Brand | Zacro |
| Brand Name | Zacro |
| Color | Black |
| Connectivity Technology | / |
| Customer Reviews | 4.5 out of 5 stars 14,736 Reviews |
| Display Type | LCD |
| Global Trade Identification Number | 00742297663543 |
| Immersion Depth | 2 Inches |
| Included Components | 1 pack digital aquarium thermometer, user manual |
| Indoor Outdoor Usage | Indoor |
| Item Height | 0.6 inches |
| Item Length | 1.46 Inches |
| Item Weight | 0.02 Pounds |
| Manufacturer | Zacro |
| Model | ZDT1-AUX-1 |
| Model Name | FBA_ZDT1-AUX-1 |
| Number of Batteries | 1 LR44 batteries required. |
| Outer Material | Plastic |
| Power Source | Battery Powered |
| Product Care Instructions | Wipe Clean |
| Resolution | 0.1 degree fahrenheit |
| Response Time | 3 seconds |
| Reusability | Reusable |
| Special Feature | High Accuracy |
| Style Name | 1 Pack |
| UPC | 742297663543 |
| Unit Count | 1 Count |
| Upper Temperature Range | 70 Degrees Celsius |
J**.
2pack Perfect for Aquarium and Water Changes
Work great. So much easier than trying to read a traditional thermometer. I use them on my aquarium setup. One monitors the aquarium 24/7 and the other I use during water changes to get temperature close to the tanks temperature. Works great buying a pair for that reason. People complained that the battery life is subpar....I've had mine for 5 months now, never turned off the main tank one, and still on same battery... I also wanted to test how accurate the temperature was compared to my other thermometers. Spot on and accurate! I recommend this 2 pair set for your aqaurium and water change bucket!
J**E
Great product, easy to use.
This item works very well and very user friendly. It literally took 1 minute to unpackage, pop in the battery, then stick the sensor and display to my aquarium. The temp is accurate and very easy to read due to the nice larger size display. It is small enough that it looks nice stuck on the side of aquarium without blocking the beauty of the aquarium display itself. The display has buttons to easily change temp from F to C whichever unit you are familiar with can be displayed. I'm not sure how battery life is as I just received the item last week.
B**N
Simple,easy, accurate
These are not heavy duty by any means, but they work perfect for the outdoor turtle pond. The reading is pretty accurate, easily accurate enough for the environment. Easy to use, no maintenance required until you have to change the battery. These tend to last me a few years each, which is highly acceptable for the price point.
R**H
Cost effective accurate measurement
I've had these less than 12 hours but they seem to be working perfectly. I have a huge fish tank with Bettas outside the glass sliding door in the living room. We love to watch them at night, but with the cold weather we have been having here in South Florida I put some foam insulation on the tank to prevent heat loss on the sides, and back. The bottom, top and front were still exposed, so I got an electric blanket to cover the top and front to prevent heat loss, and I stuck an Aiicioo 24 watt 18 x 8 inch Under Tank Heater pad to the bottom. I wanted to raise the electric blanket off the front so that we could watch the Betta and his 7 newborn 'kids', but I was hesitant because I wasn't sure how fast the cold weather would pull away the heat. I also have two immersion heaters in the tank, but with such a large tank I had doubts as to their performance in this cold weather. I placed the probe of one of the thermometers all the way to the bottom and got about 62 degrees Fahrenheit. I then placed the probe of the second thermometer near the surface, just over 12 inches from the immersion heaters and got 89 degrees Fahrenheit. I found it strange that the temperature at the bottom was so low, so I checked the Lutron app on my phone and saw that the switch for the heating pad was off. That was around 1:00pm, so I turned the heating pad on and left it. Around 7:00pm when we came back from shopping I took this picture and the surface temperature had dropped to 87.9 degrees and the bottom temperature had risen to 72.2 degrees, and this is with the front exposed. This is exactly what I needed the thermometers for. Knowing that the temperature would continue to fall during the night, I turned the electric blanket on to prevent heat loss from the top of the tank. As you can see in the picture, papa Betta(I gave mama away because she was eating her hatch-lings) is sitting between the two immersion heaters, even though the surface temperature is at the higher limit of his comfort zone. Bettas tend to reside at the surface so I'm not too worried about the temperature at depth, nevertheless I'd like the bottom temperature to hit 76. The funny thing is that the babies don't seem to mind zipping around in the colder water at the bottom, but they tend to stick mostly from mid-level to surface. These thermometers will allow me to properly monitor the temperatures and only turn on the electric blanket when it is absolutely needed. It's true the thermometers don't have a back light, but light uses up a lot of power, and for the few seconds I'll be looking at the thermometers, I can use the light on my cell phone. Wonderful and simple product and I love that each one comes with two good suction pads. You can't complain at this price.
J**A
Great value
Great price fast shipping and works great. Very accurate I have one on my outside covered patio tank and one in the tank in my office.
S**T
Great product
Worked
Z**R
Good, not great
Works fine, accuracy is acceptable, but the display is somewhat difficult to see except in very bright light because the display is small, dark, and not backlit. Also, you have to manually turn it off to save the battery - there is no auto-off or sleep mode. I am not going to use this as my primary temp gauge for my freshwater aquarium, only as a backup.
P**K
It works!
Works great.
Trustpilot
1 month ago
1 month ago