- 1). Use at least a 10-gallon tank to house your goldfish. Allow for 8 gallons of space for each goldfish.
- 2). Add several inches of gravel to the bottom of the tank. The gravel must be large enough so that your goldfish cannot swallow the rocks.
- 3). Keep the goldfish aquarium water temperature between 65 degrees and 68 degrees Fahrenheit. Never let the water reach temperatures above 72 degrees Fahrenheit.
- 4). Remove 10 percent to 15 percent of the water weekly and replace with clean, fresh water. Use a siphon to clean the gravel when removing the water.
- 5). Feed your goldfish a high carbohydrate diet with goldfish food once a day. Overfeeding could lead to both an increase in waste and chance of diseases.
- 6). Provide your goldfish with several hiding places such as logs or decorative aquarium pieces. The hiding places will keep your goldfish stress-free. Make sure the items do not have any sharp edges that could cause harm to your goldfish.
- 7). Invest in a filter for the appropriate-size tank. A filter will help keep the water cleaner 24 hours a day. Even with a filter, you must perform the weekly removal of 10 percent to 15 percent of the water. Filters will need to be cleaned--or replaced--regularly.
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