Ammonia in Aquatic Systems Quiz

What is the primary metabolic waste product in fish?

• Oxygen

• Ammonia

• Nitrate

• Carbon Dioxide

What is the most important water quality parameter affecting fish after oxygen?

• Temperature

• Ammonia

• pH

• Nitrate

What is the primary source of ammonia in most aquaculture or hobbyist systems?

• Municipal water

• Uneaten feed

• Decaying plants

• Fertilizers

What is the portion of ammonia that is approximately 100 times more toxic to fish than the ionized form?

• Ionized ammonium (NH₄⁺)

• Nitrite (NO₂)

• Nitrate (NO₃)

• Un-ionized ammonia (NH₂)

What is the biological process that eliminates ammonia from water by converting it to a less toxic compound through a series of reactions?

• Nitrification

• Respiration

• Denitrification

• Photosynthesis

What is the primary factor that affects the portion of un-ionized ammonia in water?

• Salinity

• Alkalinity

• Oxygen levels

• Temperature

What is the recommended frequency for testing ammonia in any production system?

• Once a year

• Once a day

• Once a week

• Once a month

What should be done when ammonia is present in a pond or tank?

• Increase feeding

• Stop feeding

• Increase water temperature

• Add nitrogen fertilizer

What is the primary purpose of a biofilter in tank systems?

• Increase ammonia levels

• Remove nitrate

• Colonize nitrifying bacteria

• Provide oxygen

What is the consequence of not testing for ammonia regularly?

• Decreased fish growth

• Increased fish production

• Increased water quality

• Severe problems and fish losses