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2. First Fish
for a Cool Water Aquariums
After your new aquarium equipment has been running
for three days without fish, buy three inexpensive
medium size (about 2" to 2.5") comet goldfish not
expensive fancy goldfish. Do not add more fish for
three weeks.
During the first
three weeks, the water in your aquarium may get
cloudy or foamy and have an odor.
If this happens,
click
here
to read about what to do. These first three weeks
of starting an aquarium is a risky time for fish.
The cloudy and foamy water is often called the "new
fish tank syndrome".
After three weeks if your three fish
look healthy, the water is crystal clear, and smells
clean, you can add another fish.
Even better add
some ghost shrimp. They will improve the water quality
by finding and eating small bits of food.
Be careful not to
add too many fish to your aquarium. Add a couple
of new fish every few weeks.
A maximum of 1" of
fish per gallon of water is a good rule of thumb
for beginners.
By this rule, you'd keep 10 inches
of fish in a 10-gallon aquarium. For example, five
fish each 2" in length, making a total of 10 inches
of fish in a 10-gallon aquarium.
Summary: Set
up all the equipment and let it run for three days.
Then add three inexpensive medium size comet goldfish,
and do not add more fish for three weeks.
Later
gradually add more fish until you have a maximum
of about 1" of fish per gallon of water.
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