Tips for adding a heater to an aquarium with fish already in it?

Posted on September 30th, 2009 by admin

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I have a 5 gallon aquarium and would like to add a 50 watt heater for the winter, as temperatures are already starting to drop. However, I already have my three fish in it. Is it safe to add a heater while fish are in the aquarium, and does anybody have any tips on how I might go about it??

Thank you!
Sorry! They’re danios. Definitely tropical fish.

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4 Responses to “Tips for adding a heater to an aquarium with fish already in it?”

  1. RSS Feed Reader, on October 3rd, 2009 at 11:37 am Said:

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    First we’d need to know what kind of fish you have. If they’re goldfish they absolutely should not have heat.

  2. , on October 5th, 2009 at 11:15 pm Said:

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    Assuming these are tropical fish, adding the heater is not a problem.

    It is not an instant heat situation where the temp will change drastically in a short span of time. Aquarium heaters take a bit of time to get the temp up to whatever you’ve got it set at, so adding it while the fish are there is not going to create an issue.

    Good luck. :)

  3. New York City Job Listings, on October 8th, 2009 at 12:31 am Said:

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    Just add the heater!
    if it is preset for tropical fish like mine than its great, if not, then set it to the correct temperature, that shouldnt be a problem at all.

  4. The Mexican Flu - Swine Flu, on October 11th, 2009 at 11:56 am Said:

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    Set it to the correct temperature and put it in simple as that.

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