The Ultimate Aquarium Cleaning Quiz

By: HowStuffWorks.com Contributors

The Ultimate Aquarium Cleaning Quiz
Image: iStockphoto/Thinkstock

About This Quiz

Staring at the tranquil blue waters of your aquarium and wondering why you can't see any of your fish? If it's been absolutely ages since you last cleaned the tank, take our quiz and get some aquarium cleaning tips that will make your fish visible and healthy.
How many fish are currently kept as pets in U.S. households?
500, 000
75 million
170 million
According to the American Pet Products Association, there are currently about 170 million fresh water fish kept as pets, which beats 93.6 million cats and 77.5 million dogs.

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Why are fish the most popular pet?
They are significantly cheaper to purchase and maintain.
They require less maintenance than other pets because they don't need to be fed or bathed.
Fish are possibly the most popular pet because they require less maintenance than other pets; they don't need to be fed or bathed.
They are safer than cats and dogs, especially around children.

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What do bacteria inside a fish tank do?
Break down the ammonia in fish waste.
The bacteria inside a fish tank are nitrifying, meaning they break down the ammonia inside fish waste so that the aquarium water does not become toxic.
Help the micro-organisms that fish live on flourish.
Help fish digest their food.

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How often should you clean the gravel in your tank?
weekly
If you have gravel in your fish tank, you should clean it weekly. It is easiest to do so with a special vacuum, available for purchase at your local pet supply store.
monthly
annually

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How much water do you need to replace weekly?
five to 10 percent
10 to 15 percent
You should replace about 10 to 15 percent of the total water in your fish tank weekly. The vacuum used to clean the gravel can also double as a water siphon, saving you time and money.
25 to 30 percent

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What do you need to do to water before adding it to the fish tank?
Boil it.
Filter it.
Dechlorinate it.
Water needs to be dechlorinated before adding it to the fish tank so as not to kill good bacteria. You can do that by adding de-chlorinating drops, available from most pet stores.

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Why do you need to clean the glass of your fish tank?
So that sunlight can get in; fish need some sunlight for survival.
For aesthetic purposes; so people can actually see the aquarium.
To keep algae under control.
You need to keep the glass both inside and outside of your fish tank clean, to keep algae under control.

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What should you use to clean the glass in a fish tank?
vinegar
You should clean the outside of the fish tank with vinegar and the inside with an algae scraper. Don't use commercial cleaner; they will harm the fish if they get inside the fish tank.
Windex or Windowcleen
chlorine-free bleach

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What is a good way to remove algae from the decorative items in your fish tank?
a toothbrush
The best way to remove algae from decorative items like fake plants and treasure chests is to remove them from the tank and scrub them with an old toothbrush. Don't use chemical cleaners, they will harm the fish.
an algae scraper
the specialized vacuum cleaner

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How often are disposable filters usually changed?
weekly
fortnightly
monthly
Disposable filters are usually changed monthly. If you have multiple filters, change them on a rotational basis. Permanent filters just need to be rinsed with dechlorinated water.

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You Got:
/10
iStockphoto/Thinkstock

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