How to Set up a Five Gallon Fish Tank

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Keeping small fish can be fun and rewarding, and if you follow these simple steps, your fish will thrive!

Part 1
Part 1 of 2:

Setting Up Your Tank

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  1. How.com.vn English: Step 1 Put five gallons of water in a container or multiple containers and let it rest for a day or two.
  2. How.com.vn English: Step 2 Add the background, substrate and decorations to your five gallon tank.
    Try to keep the decorations natural or at least natural looking. Driftwood is common and looks good.[1]
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  3. How.com.vn English: Step 3 Pour half of the the water you previously prepared in the tank.
    Use a colander or a plate so you don't ruin your arrangement of decorations.
  4. How.com.vn English: Step 4 Install the filter, heater, and air pump.
    Some fish do not require a heater, but filters are necessary to keep your tank clean.[2]
  5. How.com.vn English: Step 5 Arrange and place your live plants.
    [3]
  6. How.com.vn English: Step 6 Add the rest of the water to your tank.
  7. How.com.vn English: Step 7 Add several drops of conditioner (water conditioner, not hair conditioner).
    Follow the directions on the bottle as to how many drops are needed.
  8. How.com.vn English: Step 8 Let the tank cycle for at least two weeks and occasionally add some fish food in it.
    Cycling a tank is important because it lets helpful bacteria form. That bacteria will later dissolve the ammonia from the fish feces.
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Part 2
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Adding Fish

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  1. How.com.vn English: Step 1 Buy the fish!
    You can also get snails, shrimp or frogs. Don't add them right away. If they're in a bag, let it float in the tank's water for about ten minutes. Mix some of the water in the bag with the water in the tank. Do this every few minutes, and eventually let the fish out of the bag so they can explore their new home![4]
  2. How.com.vn English: Step 2 Feed your fish twice a day.
    Don't add too much. however. Surprisingly, overfeeding your fish is worse than underfeeding them.[5]
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Expert Q&A

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  • Question
    Is glass or acrylic better with fish tanks?
    How.com.vn English: Luke Leskovisek
    Luke Leskovisek
    Aquarium Expert
    Luke Leskovisek is an Aquarium Expert and the Owner of The Coral Crib, based in Bloomington, Illinois. With over five years of professional experience, Luke specifically focuses on coral aquaculture and growing coral. He and his team offer fish, aquariums, live rock, aquarium decor and lighting, water testing, aquarium cleaning and maintenance, and more to their customers.
    How.com.vn English: Luke Leskovisek
    Aquarium Expert
    Expert Answer
    Well, that will depend on lots of factors. Acrylic aquariums are very clear and light, which is a huge plus. The downside is that they scratch easily. Glass aquariums can be more prone to breaking when moving them into a house, but they are more resistant on the day to day operations, being more durable long term.
  • Question
    I have a 5 gallon tropical fish tank, one of my fish died because of the heater (according to the Petco employees) - how do I maintain the temperature of the tank without the heater?
    How.com.vn English: Community Answer
    Community Answer
    First, find out if it was really the heater that killed the fish, Petco employees are know to lie to avoid giving a refund and most of them don't know anything about fish or about caring for fish. Always do your own research. To keep the tank warm without a heater, you can warm up the room slowly until you've got the target temperature in the tank, then just keep the room at that temp. Always have an aquarium thermometer in the tank and check it often to make sure the temp is right with or without a heater.
  • Question
    How much conditioner should I use?
    How.com.vn English: Community Answer
    Community Answer
    It varies. Check the print on the side or back of your conditioner bottle.
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      Tips

      • Keep in mind the fish's needs and how they will get along.
      • A tropical fish's recommended temperature is 76-82F. Try to keep it the closest you can to that temperature.
      • Research the fish that you are going to buy, and make sure they are able to live in a five gallon tank. Recommended fish are smaller live bearers, such as guppies and platies.You can also put smaller tetra species, danios, or white cloud mountain minnows in your tank. If you don't want a lot of fish, a betta fish is a great choice. You can put only one in a tank, however, because they are aggressive fish and might even fight each other to the death. Appropriate bottom-dwelling fish are otocinclus and smaller corydoras species (such as the dwarf and the pygmy cory). Shrimp are a great addition to your tank.
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      Warnings

      • Make sure your wash off your decorations before you put them into your tank. DON'T clean them off with any cleaning agent such as soap or bleach. It can be very harmful to your fish.
      • Keep in mind that some fish have different temperature requirements.
      • Don't combine aggressive fish and other fish. Doing so will not result in a pretty situation!
      • Many livebearers will rapidly reproduce. It is important to keep this in mind when buying your fish; if you cannot support the large amount of baby fish then you should buy only females or only males. Females of certain species are less colorful, but they are also less likely to get into conflicts.
      • Don't get fish that are drastically different in size. If the fish is to small, it will most likely be eaten by another bigger fish. Remember; if a fish is small enough to fit into another fish's mouth, it will most likely be eaten.
      • Don't stock your tank with fish that will grow large. It is both a torture for the fish and doesn't look good. Inappropriate species include: plecos, most cyprinids (especially goldfish!), cichlids and loaches, bigger species of livebearers, tetras and corydoras.
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      Thing's You'll Need

      • Small fish tank
      • Filter
      • Air pump and/or heater (depending on the type of fish you want to keep)
      • Lighting
      • Substrate
      • Live plants (recommended)
      • Background (optional)
      • Water conditioner
      • décor
      • Fishnet
      • Fish food
      • Fish and other aquatic organisms

      Expert Interview

      Thanks for reading our article! If you’d like to learn more about aquarium maintenance, check out our in-depth interview with Luke Leskovisek.

      About This Article

      LL
      Co-authored by:
      Aquarium Expert
      This article was co-authored by Luke Leskovisek. Luke Leskovisek is an Aquarium Expert and the Owner of The Coral Crib, based in Bloomington, Illinois. With over five years of professional experience, Luke specifically focuses on coral aquaculture and growing coral. He and his team offer fish, aquariums, live rock, aquarium decor and lighting, water testing, aquarium cleaning and maintenance, and more to their customers. This article has been viewed 91,492 times.
      2 votes - 50%
      Co-authors: 23
      Updated: February 5, 2024
      Views: 91,492
      Categories: Aquariums
      Thanks to all authors for creating a page that has been read 91,492 times.

      Reader Success Stories

      • How.com.vn English: Tasha Thompson

        Tasha Thompson

        Jul 21, 2017

        "I have been trying to figure out how to set up a new tank for some point in the future. "
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