![Help. So this is the second digital thermometer I've bought that says my tank is at 90F degrees. My top fin one has always said my temp is around 76-78F. Why is Help. So this is the second digital thermometer I've bought that says my tank is at 90F degrees. My top fin one has always said my temp is around 76-78F. Why is](https://preview.redd.it/kz8aqwkyion91.jpg?auto=webp&s=29bb84df20c11187eac50b6001d57739ba3d3f5b)
Help. So this is the second digital thermometer I've bought that says my tank is at 90F degrees. My top fin one has always said my temp is around 76-78F. Why is
![Amazon.com: BCOATH Top Fin Thermometer Glass Suction Cups Fish Tank for Betta Fish Betta Fish Tank Betta Fish Thermometer Betta Tank Betta Fish Accessories Gecko Tank Tools 3D Electronic Lizard : Pet Amazon.com: BCOATH Top Fin Thermometer Glass Suction Cups Fish Tank for Betta Fish Betta Fish Tank Betta Fish Thermometer Betta Tank Betta Fish Accessories Gecko Tank Tools 3D Electronic Lizard : Pet](https://m.media-amazon.com/images/I/51UR5FtJcnL._AC_UF1000,1000_QL80_.jpg)
Amazon.com: BCOATH Top Fin Thermometer Glass Suction Cups Fish Tank for Betta Fish Betta Fish Tank Betta Fish Thermometer Betta Tank Betta Fish Accessories Gecko Tank Tools 3D Electronic Lizard : Pet
![Amazon.com: FRCOLOR Turtle Tank Thermometer Water Temperature Thermometer top fin Thermometer Digital Aquarium Thermometer Fish Tank Temperature Meter Betta Tank Sucker Thermometer Monitor 3D Glass : Pet Supplies Amazon.com: FRCOLOR Turtle Tank Thermometer Water Temperature Thermometer top fin Thermometer Digital Aquarium Thermometer Fish Tank Temperature Meter Betta Tank Sucker Thermometer Monitor 3D Glass : Pet Supplies](https://m.media-amazon.com/images/I/51elf6qdXcL._AC_UF350,350_QL80_.jpg)
Amazon.com: FRCOLOR Turtle Tank Thermometer Water Temperature Thermometer top fin Thermometer Digital Aquarium Thermometer Fish Tank Temperature Meter Betta Tank Sucker Thermometer Monitor 3D Glass : Pet Supplies
![Brand New Top Fin 10 Gallon Tank Includes Glass Tank With Hood 2 Color Led Lights 1 Power Filter 1 Filter Cartridge 1 Heater 1 Thermometer Net for Sale in Concord, NC - OfferUp Brand New Top Fin 10 Gallon Tank Includes Glass Tank With Hood 2 Color Led Lights 1 Power Filter 1 Filter Cartridge 1 Heater 1 Thermometer Net for Sale in Concord, NC - OfferUp](https://images.offerup.com/74MqHsqcCtYZ8OE23CSaWfZkMrI=/250x250/8821/88218f3563304c7a977eeb733d122d92.jpg)
Brand New Top Fin 10 Gallon Tank Includes Glass Tank With Hood 2 Color Led Lights 1 Power Filter 1 Filter Cartridge 1 Heater 1 Thermometer Net for Sale in Concord, NC - OfferUp
![Grreat Choice® Floating Aquarium Thermometer, One Size - PetSmart, Edmonton Grocery Delivery | Buggy Grreat Choice® Floating Aquarium Thermometer, One Size - PetSmart, Edmonton Grocery Delivery | Buggy](https://storage.googleapis.com/buggy-ca-product/40708_5262302_1561062585-190x190.jpg)
Grreat Choice® Floating Aquarium Thermometer, One Size - PetSmart, Edmonton Grocery Delivery | Buggy
![$11/mo - Finance PONDON 3 Gallon Fish Tank, Glass Aquarium Tank with with Thermometer and Filter, 7 LED Light Colors, Small Fish Tank for Betta Fish Starter Kit (White-Blue) | Buy Now, Pay Later $11/mo - Finance PONDON 3 Gallon Fish Tank, Glass Aquarium Tank with with Thermometer and Filter, 7 LED Light Colors, Small Fish Tank for Betta Fish Starter Kit (White-Blue) | Buy Now, Pay Later](https://m.media-amazon.com/images/I/81xNVxbIAKL._AC_US1400_.jpg)