L3 Aquatics - Filtration

Open Ended

Why do fish tanks usually need filtration?

Open Ended

What are some factors you would consider when choosing a filtration system for an aquarium?

Open Ended

How many types of filter/filter media can you name?

Multiple Choice

What is the main role of a filter in an aquarium?

• To add oxygen to the water

• To remove organic particles and fish waste

• To feed the fish automatically

• To heat the water

Fill in the Blanks

Mechanical filters operate by drawing aquarium water through a

and expelling it quickly after.

Open Ended

Why is it important to rinse the sponge in a mechanical filter regularly?

Multiple Choice

Why is it important to wash the sponges in water taken from the tank?

• Chlorine in tap water kills good bacteria

• Water is expensive

• So you don't spill water bringing a bucket from the tap

• You like the smell of dirty fish water...

Multiple Select

Which of the following materials can be used as media in a biological filter?

• Small clay beads

• Activated carbon

• Plastic beads

• Gravel

Open Ended

Explain how biological filters help in maintaining water quality in an aquarium.

Fill in the Blanks

All filter media should only be cleaned in water removed from the aquarium to prevent

from being killed by chemicals in tap water.

Open Ended

What is the main purpose of the different shapes and types of media shown in the images of biological filters?

Multiple Choice

Which of the following is NOT a function of activated carbon in chemical filters?

• Eliminating odor

• Removing chlorine

• Increasing water temperature

• Neutralizing heavy metal ions

Multiple Choice

How does carbon in chemical filters remove impurities from water?

• By absorbing organic impurities

• By trapping large particles

• By increasing water flow

• By cooling the water

Multiple Choice

Which of the following are advantages of using sump tanks for filtration?

• They hold external filtration systems

• They are easy to access and maintain

• They allow you to see the filtration process

• They require less space

Open Ended

Describe how an under gravel filtration system works and discuss one advantage and one disadvantage of using this type of filter.

Open Ended

Reflecting on today's session, what is one question you still have about filtration systems or something you would like to learn more about?