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This is a discussion on Thermometer within the Freshwater Aquarium Equipment forums, part of the Beginner Freshwater Aquarium category; --> O.o, so definitely getting a immersed thermometer......

Old 05-28-2009, 09:11 AM   #11
O.o, so definitely getting a immersed thermometer...
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Old 05-28-2009, 11:42 AM   #12
So the digitals don't sit in the water? If not they are definitely out. I just figured the probe went in the water. Suppose i should have looked closer.
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Old 05-28-2009, 01:13 PM   #13
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Most digitals I've seen have a temperature probe you put in the water which is ideal.
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Old 05-29-2009, 12:45 AM   #14
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I've never bothered with digital. I use the suction cup glass type myself. Of course, a stick-on thermometer is going to be a better choice for something like a big cichlid that could break a glass one or try to eat a digital probe. I learned this lesson after my brother-in-law's Texas cichlid pulled a really expensive digital instrument (temp, pH, TDS and maybe some other measures) into the tank by yanking really hard on the probe.
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Old 05-29-2009, 07:39 AM   #15
did it electrocute the fish?...
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Old 05-29-2009, 10:58 AM   #16
I had a digital and it sucked. My oscar was always chewing on the wire so maybe because it was always moving around but the temp would vary wildly. I assumed it was the heater going bad and then the batteries died so I dropped in a floating one that was supposed to have a suction cup but it just floated free and lo and behold, the temp was perfect and never fluctuated. The next time I ordered from fostersmith I bought three or four of the bargain suction cup ones. You just can't beat mercury.
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Old 05-29-2009, 12:04 PM   #17
Sounds like i will be sticking with the glass suction cup type after all. I figured the digital would be a nice upgrade. Thanks a lot guys. I'll just buy a handfull of them and hope they're more accurate this time.
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Old 05-29-2009, 07:26 PM   #18
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Digitals are a nice upgrade IF your fish won't eat it and if you spend the extra bucks to get a good quality one.
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Old 06-10-2009, 09:57 AM   #19
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I just bought a new 20 gal Aqueon deluxe kit (newbie here) and it says it comes with a "digital thermometer" and I got excited. Turns out that just means one of those stickers that goes on the outside.

After reading this thread, I think I should go buy a submersible one, but after iamntbatman's story, I don't know what I should do.

Which of these would be ideal?
Zoo Med digital thermometer (I like this style, I like the simple readout types. Are they reliable?)
Lifeguard little time or temp dig clock/thermometer (This one too)
Top Fin floating glass thermometer (This one seems simple, it can be suctioned inside)
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Old 06-10-2009, 10:57 AM   #20
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if you stick with a floating type WITHOUT the suction cup it is alot harder for any large fish to break them.........They work the same, but with the suction cup keeps the thermo right next to your tank and allows fish to keep banging it against the side...........with a floating type the fish will just knock it around your tank and eventually lose interest.......
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