Water temperature

Discussion in 'Coral' started by newhobby, Nov 6, 2011.

  1. newhobby

    newhobby Guest

    Guess I need to buy another heater.
    I normally keep water at 77.
    Is 75 too low to keep during winter nights?
  2. Kensington Reefer

    Kensington Reefer Supporting Member

  3. seminolecpa

    seminolecpa Past President

  4. newhobby

    newhobby Guest

    Thanks :)
  5. bondolo

    bondolo Supporting Member

    I was curious so looked up daily coastal sea temperature for Fiji and Hawaii. The Hawaii data was better but both appear consistent. It looks like daily water temperatures fluctuate about 1-2 C max per day at a coastal locations. Out on the reefs may fluctuate somewhat less. Over a week or a month the temperatures seem to be in a 2-3 C degree range (weather most likely accounting for the wider range). Over a year almost 5 C degrees from lowest to highest. None of these changes would be sudden, not more than 2 degrees C per day. Looking at Hawaiian weather charts for the last month along with sea temperature it looks like they experienced a 2 degree drop in 12 hours along with a barometric low, indicating a storm or bad weather. Air temperature dropped by almost 7 degrees C (to a chilly 72F :p ) in the same period.
  6. GreshamH

    GreshamH Guest

    Hawaii is probably a horrible place to look into coral reef temps... unless you're trying to emulate the barren brown reefs of Hawaii.

    Colder reefs grow slower, if that is your aim. I run 74f - 76f.

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