Porcupine Puffer ate my glass Floating Thermometer!!!

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Originally Posted by Funky_Fish14

If your main tank temperature is that much different than your sump temperature, then I dont think you have enough water-flow going. + The 'floating thermometer' is not really accurate if the top is bobbing around sticking out of the water exposed to the lights and air just above the tank. A thermometer placed right where the tank's drain empties into the sump is the perfect spot for it. That will give you a reading pretty darn close (i'd bet less than half a degree) of your main tank provided you have correct circulation. Sticky 'strip' thermometers are no good IMO.

You have a good point, perhaps I don't have enough water-flow going, I will look at that. With the floating thermometer, if I think to get another one, I will put in tanks drain box. That would work. Thanks for your feedback!