How accurate are glass thermometer vs digital?

[spongebob281]

Nice! Got one of those at work. Nice and quick.

I actually just found my first/old digital thermometer. It's a Coralife, lol. Thought I put it on one of my tanks to see if it still works. There's a temperature reading, but I just did a water change when I found it. I'll check it tomorrow to see if it matches what I set the heaters to.

any update?

 

[Crazyfish88]

I use an infrared temperature gun instead of thermometers. Just have to make sure you are measuring the water not the glass.

Nice, I use these guns at work as well to measure temps in our freezers and coolers. Just make sure u don't point it towards your eye