What thermometer to trust ? It driving me insane !!

[Peter608]

After nearby killing my fish dew to a faulty thermometer I bought three ! A stick on strip , a glass one and a digital one ! At first all was fine , all about the same ! Now they are all different , ranging from 24 to 26.5 ?? Not that much of a problem I know but you would think it can't be that difficult to find the correct temperature in 2022 ?? Any ideas !!.??

 

[Guppy777]

I use these from Amazon
https://www.amazon.com/gp/product/B01C6PE4G2/ref=ox_sc_act_title_1?smid=A2USLH2FN8ZB3N&psc=1

They have a on/off button but I leave them on all the time. Batteries are about 50 cents and last well over a year

 

[Lucas35]

Digital should be the most accurate one. Stick on strips are not super accurate and glass thermometers can be hard to read to as much accuracy as a digital thermometer.

 

[Flyfisha]

Relax kee fish is not rocket science.
Any steady temperature is ok for tropical fish ,plus or minus a couple of degrees.
A temperature gauge is used to tell you if the heater is broken.
The digital temperature gauges are no more consistent. Just use the same one all the time.

 

[GlennO]

I'd discount the stick on one and use the average of the other two.

 

[Itiwhetu]

Buy a good quality multimeter (Electricians use them) and use the probe that comes with that. Accurate to 0.5 Degrees C