Tank thermometer not working?

[David]

I have had one of those stick on thermometers for about 3 weeks and suddenly it seemed to stop working. I put my finger in the water this morning and it seemed quite a bit warmer than usual, so I turned the heater off. It is now several hours later, and the water has cooled, but the thermometer remains the same! Is it stuck?

 

[Paul_MTS]

has it been damaged? by getting pressed hard etc? if it has then crystals are damaged.

 

[David]

I don't think so... I never touch it.

 

[David]

Nevermind it started working again. )

 

[pgtips]

buy a new one

 

[jams.alaskan]

David, the price of a new one far out weighs the worries of that one doing that again. I'd get a new one and be glad that you noticed the problem before something terrible happened.

ALASKA

 

[Final Dynazty]

Make sure if you unplug it or put it in a new tank wait 30 min b4 turnin it back on.

 

[SirMinion]

Those stick on liquid crystal ones are rubbish. Get one with a digital readout, they're only about £7 here.

 

[Da_Oz]

Ok just MO but don't the stick on kind read the glass temp mixed with the room temp. When what your wanting is the water temp.

 

[David]

I've had a stick on thermometer on my old 10 gallon for years, and I've never had any problems...

 

[noop]

i have a suction cup one and a stick-on one. they're so cheap it's worth getting 2 in case you get a dodgy reading