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How Accurate Are Stick On Aquarium Thermometers? [Solved]

Stick ons aren’t as accurate because the essentially measure the glass temperature, not the water temperature, so if the room is colder or warmer then the tank by more then a few degrees it throws it off.20 Mar 2008

How to check fish tank thermometer accuracy!

Ever wondered

The WORST Thermometer for your Aquarium - DO NOT BUY

Looking at the worst

Comparing some aquarium thermometers - Outside Digital Thermometers and Internal Mercury Scale type

Here is a little video of 4 different