Change the Water in a Fish Bowl

You should change the water in your fish bowl at least once per week, if not more often. Regular cleaning of a fish bowl serves two purposes. First, it will eliminate any odors coming from the bowl. Secondly, it will help keep your fish healthy. If you notice the glass on your fish bowl is becoming hazy, then it is time to replace the dirty water with clean water.

Steps

Relocating Your Fish

  1. Find a holding tank. Your fish will need to be placed in a temporary holding tank while you clean and refill their permanent home. So find a suitably sized bowl, container or bucket that will serve as a temporary holding tank.[1]
    • Use a bowl or container that has not been washed with soap, as the residue from many soaps can be harmful to fish.[1]
  2. “Age” the water. You will need to age the water you will use in your holding tank to equalize the temperature and PH balance. Let the water sit overnight after filling the temporary holding container to achieve the proper temperature and to allow the levels of chlorine in the water to neutralize.[2]
    • If you don’t want to wait for water to age overnight, then it is wise to treat this water with a dechlorinator. These products neutralize the chlorine levels found in most city and municipal water sources.[2]
    • Make sure the water in this temporary holding tank is the same temperature as the water in the permanent tank. You may also wish to cover this tank with a lid to prevent the fish from jumping out.
  3. Avoid direct light. Don’t place the temporary holding tank in a window or under a bright light, as the heat from these sources can raise the water temperature, potentially harming your fish. Also, be sure to place your temporary holding tank in a place where children and other household pets can't bother the fish.[3]
  4. Move your fish. Take your fishnet and scoop your fish out of the fish bowl and put them into the temporary holding tank of fresh water. Use a large bowl for this holding tank so that your fish have plenty of room to swim.[1]
    • When using a fishnet to transfer fish from one container to another, make sure the containers are close together. This will reduce the amount of time the fish is out of the water, thus reducing its stress levels.[1]
    • Alternatively, you can use a small, clean bowl to transfer your fish. Make sure the bowl does not have soap or soap residue on it and select a rounded bowl with smooth edges. When using this method, simply dunk the small bowl into the fish tank and allow the fish to swim into it. Be patient and don’t chase the fish around its bowl. This could stress the fish out.[1]
  5. Monitor your fish. While you undertake the cleaning process, make sure to keep a watchful eye on your fish in their temporary tank. Look for changes in their behavior, color and activity levels. The following signs should be an indicator that the water in the temporary tank is too warm.[4]
    • Hyperactivity
    • Changes in the fish’s color
    • “Yawning” at the surface of the water (although some fish, like labyrinth fish, breathe this way)
    • If the water is too cold, your fish may exhibit the following signs:[5]
    • Inactivity
    • Sitting on the bottom
    • Changes in color

Refreshing the Contents of Your Fish Bowl

  1. Remove dirty water. Dump out the old water from your fish bowl. Use a net, sieve or filter to keep the solid contents from falling out of the bowl and down your drain. You may also wish to dump the dirty water into a garden or potted plant. [1]
  2. Clean the solid contents. Clean-Aquarium-Gravel and other decorations in your bowl with warm water and a little bit of salt. For the best results, place the gravel and decorations on a mesh sieve and scour with hot water from your sink. Once you have done this, set them aside and allow them to cool.[1]
  3. Clean the bowl. Scrub the fish bowl with warm water and salt. Avoid soaps and cleansers that may leave chemical residue inside the tank. Then, rinse the bowl thoroughly with warm water.[1]
    • If there is a noticeable buildup of lime on your fish bowl, clean it with vinegar then rinse the vinegar out with warm water. [1]
  4. Allow the bowl to sit. After washing and rinsing the fish bowl, allow it to sit for 20 to 30 minutes. This will give the glass of the bowl time to cool down from its exposure to the warm water used to wash and rinse it out. Allowing the bowl time to return to room temperature will help to ensure the bowl is the ideal temperature when the fish are returned. [4]

Refilling Your Fish Bowl

  1. Replace the solid contents. Place the gravel and any decorations back into your clean fish bowl before putting clean water in the bowl. Make sure everything is arranged the way it was before so as not to upset the fish by changing their environment.[1]
  2. Refill the bowl with clean, aged water. Fill the fish bowl with room temperature water that has been treated or left out overnight to reach room temperature. If you choose to use dechlorinator, be careful not to spill it, as it could leave a chemical smell on your carpet or furniture.[2]
    • Again, you may wish to use a dechlorinator rather than waiting overnight for chlorine levels to neutralize. If this is the case, make sure allow the water temperature to equalize before placing the fish back in the tank.[2]
    • Be sure to cover the water or put it out of reach if you have pets or children. This will help you ensure the water is not contaminated while it is aging.
  3. Retrieve your fish. Scoop your fish from the temporary holding tank using your fishnet or small bowl. Try to move the fish as quickly as possible to avoid stressing the fish. Also, take care not to drop the fish or let them fall, as they can be badly injured if this occurs. [1]
  4. Place fish back in their original bowl. Place your fish back into the fish bowl that has been filled with clean water. Gently lower the fish into the water using a net or a bowl. Do not just dump the fish into the bowl.[1]
  5. Monitor your fish. Fish are most likely to experience stress and environmental or temperature related maladies during and immediately after cleaning their tank. So, keep a close eye on your fish after putting them back in their bowl to ensure they are adjusting well to their cleaned environment. [4]

Tips

  • Treating the water in your fish bowl will keep the environment cleaner for your fish and will allow you to change water less frequently. Discuss water treatment with an expert or with someone who works at a local pet store.
  • Be sure not to purchase too many fish or to select fish that are too large to put inside your bowl.
  • If you prefer not to treat the water in your fish bowl, then use bottled spring water to replace dirty water.
  • Never do 100 percent water changes. It takes away good bacteria and can shock your fish from being netted. Your fish can also be shocked by changes in water temperature.
  • Preferably, don't keep any fish in a bowl. They are too small and can't fit a filter and heater. Bettas and goldfish both need tanks and filters, especially for goldfish. Goldfish grow huge!

Warnings

  • Make sure the water in both your spare bowl and your fish bowl is dechlorinated and room temperature before transitioning the fish into either bowl.
  • If you are using a dechlorinator, follow the manufacturer’s instructions carefully for the protection of your fish.

Things You'll Need

  • Fish bowl
  • Gravel
  • Extra bowl for fish to swim in while you change the water
  • Mesh sieve (optional)
  • Dechlorinator (optional)

Related Articles

Sources and Citations

  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 http://freshaquarium.about.com/od/maintenance/a/How-To-Clean-A-Fish-Bowl.htm
  2. ↑ 2.0 2.1 2.2 2.3 http://www.firsttankguide.net/dechlorinator.php
  3. ↑ http://www.petplace.com/article/fish/general/aquarium-care/how-to-care-for-your-fish-bowl
  4. ↑ 4.0 4.1 4.2 http://www.drsfostersmith.com/pic/article.cfm?d=159&category=583&articleid=2644
  5. ↑ http://www.hartz.com/Fish/Getting_Started/Fish_behavior_basics.aspx
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