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
capetsma Reptile Thermometer: Accurate and Easy-to-Read Digital Hygrometer for Reptile Terrariums - Temperature and Humidity Monitor in Acrylic and Glass Terrariums (1 Pack)
8 Review
π‘οΈ Zacro LCD Digital Aquarium Thermometer: Accurate Fish Tank & Terrarium Water Temperature Monitoring
8 Review
π‘οΈ Lifegard Aquatics Digital Temperature Alert
9 Review
Vacuum cleaner TEQQO Aquastick 3 in 1 Power, grey/turquoise
26 Review
Mini pump Xiaomi Mijia Electric Pump 1S, plastic, black
55 Review
Efficient 2-In-1 Magnetic Fish Tank Cleaner With Non-Slip Design And Scratch-Free Blades
37 Review
π§² Efficient Magnetic Fish Tank Cleaner: KEDSUM Floating Clean Brush with Handle Design
34 Review