Accurate thermometers.

[Tom R]

I do not think a degree here or there is all that important. 78 79 80 81 it doesn't matter. What is important is the swing. The steadier the temp the less the stress on the critter. If on the other hand the thermometer is out by 8 degrees through it out and buy a new one.

When ever I have bought a new thermometer I check all of them in the rack picking one out of the group showing the same temperature.

Tom R

[Myka]

When I bought my JBJ digital thermometers, I checked the rack which had about 10-12 of them on it, and I noticed a couple of them had a different number than the rest, so I made sure I didn't buy those ones.

[mike31154]

I have one of almost every type monitoring my tank. Two digitals, one conventional and the cheapo stick on. They're all within a degree or so of each other. Need to remember that the location of the sensor/thermometer will have some influence over the reading. The sensor probes for my two digitals are closer to each of my two heaters than the conventional and stick on, so I expect them to read a tad higher.