Conflicted - Heater Quantity and Size for New 90 Gal

Discussion in 'Heaters' started by Diodehead, Mar 8, 2014.

  1. Diodehead

    DiodeheadNew MemberMember

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    Dearborn, MI
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    I will be picking up my new 90 Gallon in a couple of days. The rule of thumb on heaters appears to be 3-5 watts per gallon. That puts me at the 270 to 450 watt range. My plan is to use the Aqueon Pro Series.

    I live in SE Michigan so climate varies, but my house it kept around 70 degrees F year round.

    I've read conflicting information on one heater vs two, so here are my options as I see it:
    (1) 300 watt
    (2) 150 watt
    (2) 200 watt

    The cost up front isn't really a factor, so I'm looking for opinions on the best configuration.
     
  2. sheilashoelady

    sheilashoeladyWell Known MemberMember

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    I would go with 2 200 watt heaters. That way, if one goes bad, you still have one in there. Also, in a bigger tank, it will be easier to distribute the heat properly with 2 heaters.
     
  3. Claire Bear

    Claire BearWell Known MemberMember

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    Hi, I am in a much warmer (relatively speaking) climate with a few cold bursts. I have one 300 watt in my
    90g. It works fine but I do not face the type and length of cold you face. I also keep my home at about 72 year round so not sure if that makes a difference. I actually have two 90g tanks and they each have one heater.
    I think it boils down to preference!
     
  4. Rivieraneo

    RivieraneoModeratorModerator Member

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    What kind of fish will you be keeping ? if they are high temperature dependent, go with the fail safe of (2) 200 watt.
     
  5. utkgreg

    utkgregWell Known MemberMember

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    My vote, based on the options given, would be "C."

    I really feel that when you start getting in to these larger tanks, there is a strong benefit to having multiple heaters. If one goes out, you are still able to maintain at least some heat. Also, it makes it easier to maintain a consistent temp throughout the tank. If you have only one heater, you are much more likely to have a significant temp fluctuation from the heater to the most distant part of the tank.

    I have recently set up a 90 gallon tank. I purchased a 300 watt and a 200 watt.
     
  6. OP
    OP
    Diodehead

    DiodeheadNew MemberMember

    Messages:
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    Location:
    Dearborn, MI
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    5 to 10 years
    Great responses. Thanks!

    The fish kept will be freshwater comunity, and while i don't think they will be high temperature dependent, I like the idea of having two heaters spaced at ends of the tank.

    I will go with the 200 watt as suggested in case on fails (and it will at some point) because, as I see it, I stand a slightly better chance at keeping the temp stable with a 200 over a 150. Thanks.
     
  7. utkgreg

    utkgregWell Known MemberMember

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    Good luck with your set-up!
     
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