How to Make Your Goldfish Thrive @ Home





Introduction: How to Make Your Goldfish Thrive @ Home

The goldfish bowl is an outdated fish torture device. Learn how to care for these fish properly.

Step 1: Tank Size

For (long bodied) common/comet/shubunkin goldfish you will need 200 litres (50 gallons) for the first one and 80 litres (20 gallons) for each additional.

For fancy goldfish (fantails,pearlscale,celestial etc) you should have 80 litres (20 gallons) for the first one and 40 litres (10 gallons) for each additional.

Long bodied goldfish and celestials should be kept in a species only tank.

Step 2: Filteration

Like all fish goldfish need filtration.

You should buy a filter capable of filtering the tank water 10 times an hour.

So buy the most powerful filter you can afford.

You will also need to cycle the aquarium
This can take up to 4 weeks.

Step 3: Feeding

A goldfish has a stomach about the size of its eye.

I would feed a small goldfish the amount it can consume in 2 minutes every day
and a large goldfish a larder amount daily.

Choose a goldfish food containing low amounts of flours and wheats and higher amounts of vegetation and meat such as worms and shrimp.

Step 4: Maintenance

# Do 25% water changes weekly using a siphon.

# Always use water dechlorinator. This removes the chlorine and chloramines. from the water.

# Add a little aquarium salt to help fight infection about 1 tsp per 20 litres (5 gallons).

# Wash out the filter cartridge in old tank water monthly. Do not rinse the cartridge so much that all the bacteria comes out of it, or you will have a re-cycle and your fish will die. Just rinse the cartridge a little so water flow is normal.

Step 5: Adding the Goldfish

Only add one fish a week so the filter can handle the bio load.

1. Float the bag the fish is in for 15 minutes.

2. Add 1 cup of your cycled aquarium water to the bag.

3. Wait 10 minutes.

4. Gently net the fish into the aquarium and discard the bag water.

Step 6: The End

Please comment, question and make suggestions so i can improve on my instructable.



    • Trash to Treasure

      Trash to Treasure
    • Paper Contest 2018

      Paper Contest 2018
    • Science of Cooking

      Science of Cooking

    We have a be nice policy.
    Please be positive and constructive.




    My goldfish charlie and Jack will probably love it.

    yay thanks alot i have 1 black moor and organda and they are very happy!

    I'm getting some fish tomorrow, now im thinking bout some goldfish instead of tropicals lol.

    Thanx!  I'm a new goldfish owner.  I have four beautiful, happy fat-belly goldfish.  I also have algae that makes my tank look dirty.  :(  Any suggestions on that, or should I just scrub it off at water change and quit my gripin'?

    You might want to add Chinese Algae Eater fish to the tank one of the few cold water  algae eaters.
    I found these in a fish Shop in Lower Hutt,  Wellington, New Zealand, it has been verry good cleaning the algae my tank. But dont know about other parts of the world.


    Every time i get an algae eater it just sits there and does nothing. i dont know why lol.

    Thank you!  I ended up getting a  clown plecostamus, and he is doing a pretty good job on my algae. 

    Cool, Now I should get another tank. just looked at at it and it looks like it would suit my tank better than my Chinese Algae Eater.  Thank you

    No problem!   I have to tell you, though, you might not see much of your clown plecostamus!  Mine is SO shy.  He hides in a hole in my texas holey rock all day.  But, like I said, at night he does his job with the algae. :)  

    My tends to hide as well but. he gets use to you in the room and starts cleaning away again.