temp diffrence

Discussion in 'Heaters' started by brokenwing, Mar 21, 2010.

  1. brokenwingWell Known MemberMember

    Im a bit confused. Yesterday I got a new stealth heater for a 15 gallon tank. It is 50 watts, and set on 78 degress. I have a coralife thermometer, and no matter where I move It, it reads 75.6 degrees. I know both the heater and the themometer say they are accurate within plus or minus 1 degree, but it just does not seem right to me any suggestions.
     
  2. djornaValued MemberMember

    is your heater close to your filter that helps circulate the warmer water around.
     
  3. ButterflyModeratorModerator Member

  4. brokenwingWell Known MemberMember

    I have the heater right under the filter so the water is circulating around it. My floating thermometer says 76 so im missing about 2 degrees. I forgot to mention I have the lid slightly ajar cause im seeding a new filter. could i be losing heat because of that.
     
  5. ButterflyModeratorModerator Member

    Having the lid ajar shouldn't make you lose that much heat. Using a second thermometer to verify the reading is the simplest way to check to see if the reading is correct.
    Carol
     
  6. David CWell Known MemberMember

    My stealth heaters are all off by 2degrees, every last one of them. At least they're consistent in the brand (otherwise an excellent heater). Be aware the coralife digital thermometers are notoriously inaccurate, something you should be aware of.

    Dave
     
  7. brokenwingWell Known MemberMember

    I really like the idea of having an digital aquarium thermometer what all do u reccomend if coralife is inaccurate
     
  8. David CWell Known MemberMember

    I use my reefkeeper lite's temperature probe and I had to calibrate it so it would be accurate. I have no experience with other models. I've just read a number of posts of peoples Coralife thermometers being off by up to 18degrees after they've been a few months old. I was going to buy one myself and decided against it.

    Dave
     
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