Best thermometer?

[CeeGee]

Who makes the best thermometer? I have a couple of the coralife and lifeguard digital thermometers and a temp probe on my pH monitor and they all read different.

How do you know which is correct? My tank is getting a little warm and I need to know what the real temp is.

Thanks,
C.G.

[LBCBJ]

I use a Lifegaurd, always been accurate for me.

[CeeGee]

I have multiple lifeguards and they all give different readings by as much as 2 degrees.

[xtrstangx]

I use a RK2 to show my temperature.

[smcdonn]

I use the coralife. Where are your probes located?

[CeeGee]

In the sump.

[Paul79936]

You don't. Thermometers are not calibrated very well. Consistency is the important thing, so it is not that big a problem.

[jimbo045]

I say stick with a Coralife one. It seems acurate enough for a reef tank. I run from 75-79 all day and night. IF you keep yours around there, it should be fine too. JD

[cthetoy]

You can check if your thermometer is accurate. Just stick your probe in a cup with lots of ice and lsomewater. Temp should be 32-33 degrees.

[CeeGee]

will do. Thanks.

[Yam]

Aquacontroller II

[Sk8r]

Get thermometers of different type, put one in the sump and one above, and don't wholly trust either of them. But they can at least serve as a check on each other. If your front glass feels warm when touched---that's not good.

[jmccalip]

It'll read my temp at 98.6F on the dot.

http://reefcentral.com/gallery/data/500/879784757F1D5-849D-4B13-AC366A4416ABC7D8.JPG

They pop up on ebay. Only cost me $28.00 shipped.