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Simple Aquarium Care
Can you pass the test to see if you are able to successfully house aquatic plants and fish?
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Last updated: November 25, 2025
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| First submitted | November 25, 2025 |
| Times taken | 4 |
| Average score | 93.3% | Report this quiz | Report |
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1. What is used to check the amount of CO2 in a tank?
CO2 drop checker
CO2 drop injector
CO2 color checker
CO2 color indicator
2. What natural cycle is taking place when an aquarium is cycling?
The Water Cycle
The Nitrogen Cycle
The Aquarium Cycle
The Ammonia Cycle
3. What is the optimal pH range in an aquarium?
8.0-9.0
7.0
5.0-6.0
6.5-7.5
4. What two species are crucial to maintain algae and waste control?
Cory Catfish and Bettas
Tetras and Rasboras
Snails and Shrimp
Remoras and Shrimp
5. What type of filter bests filters large aquariums?
Underwater Filter
No filter (let nature do its thing)
Canister Filter
Hang-On-Back Filter
6. How long does it take for and aquarium to cycle (usually)?
A few days
1 year
3-5 weeks
Two months exactly
7. What substances CAN NOT be found in the tank after the cycling of the tank is done?
Nitrites and Nitrates
Ammonia and Nitrites
Nitrates and Ammonia
ONLY Ammonia
8. What gas can be injected into the tank to help plant growth?
Oxygen O2
Carbon Dioxide CO2
Nitrogen N2
Methane CH4
9. What substance blooms when excess food is added to a tank?
Nitrates
Carbon Dioxide
Nitrogen
Ammonia
10. What type of fish can, contrary to popular belief, be housed with other fish?
Arowana
Sharks
Lamprey
Bettas
11. What happens to fish when plastic plants are put in a tank?
Nothing, fish live peacefully
The fish eat the plastic and die
The plastic pollutes the water making it unsafe
The fishes fins get harmed and cut
12. Where is the safest place to buy healthy fish?
Big Box stores
Private Breeders
Just catch them from the ocean
Chinese Fish farms
13. What GPH (gallons per hour) is recommended for a 20-gallon aquarium?
50-100 GPH
1000 GPH
300-500 GPH
100-200 GPH
14. What is a common schooling fish found in many aquariums?
Shrimp
Rasbora
Cichlids
Bettas
15. What is an aquarium called that has multiple species of fish?
A multi-fish tank
A neighborhood tank
A community tank
A planted tank
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