These temperature sensors are accurate to +-.5 degrees. I am very happy with it. My only problem was getting them to stick together. It takes 2 or 3 times before they finally stick. After that they seem to hold up. A similar problem with the suction cup in the tank. That's no reason not to buy them. Just check the suction power to make sure the active fish aren't knocking over the probe. I am very happy with this purchase
Lush Live Aquarium Plants: Pest & Algae Free Greenpro Tissue Cup With Lagenandra Meeboldii, Anubias, Cryptocoryne, Bucephalandra & Piptospatha Ridleyi
17 Review
π‘οΈ Zacro LCD Digital Aquarium Thermometer: Accurate Fish Tank & Terrarium Water Temperature Monitoring
8 Review
Thermometer RST 01077, white
21 Review
π‘οΈ Accurate Water Temperature Monitoring with DIGITEN Digital Aquarium Thermometer for Reptiles, Turtles, and Amphibians
8 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review
Jasonwell Magnetic Aquarium Fish Tank Glass Algae Cleaner - Floating Brush (L Size)
37 Review
π U-BCOO Aquarium Gravel Cleaner Fish Tank: Manual Siphon for Efficient Filter Gravel Cleaning and Water Change in Tanks
22 Review
𧲠Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review