I find on both tanks I have a slight difference between my RKL temp probes and other digital thermometers I use
(one of these Chinese proverb situations I guess: A man with one watch always knows what time it is; a man with two watches can never be sure...)
On the seahorse tank my temp is kind of crucial (should stay below 75 degrees) so I a wondering which thermometer to trust more?
The iTemp probe from Digital Aquatics that came with the RKL or the ZooMed digital thermometer?