Water Quality and Aquaponics Test Review

Identify structure A:

• Sump

• Fish-rearing tank

• Hydroponic tanks

• Clarifier

What reduces suspended solids from fish-rearing tank effluent prior to the biofilter treatment?

• Clarifier

• Sump

• Biofilter

• Hydroponic tanks

What is considered the most important water quality variable in fish culture?

• Dissolved oxygen concentration

• Salinity

• Alkalinity

• pH

What is the purpose of monitoring total ammonia nitrogen (TAN) concentrations in ponds?

• To predict nitrite problems

• To reduce organic material breakdown

• To prevent bacterial infections

• To maintain proper oxygen levels

Identify structure C:

• Hydroponic tanks

• Sump

• Fish-rearing tank

• Clarifier

Identify "4" on the oxygen meter diagram.

• Membrane

• KCl solution

• O-ring

• Silver anode

Water is collected in the ______ and returned to the fish-rearing tank.

• Hydroponic tanks

• Clarifier

• Sump

• Biofilter

At what pH levels can fish become stressed and die?

• Between pH 5-11

• pH 8

• Below 5 and above 11

• Between pH 7-9

When should dissolved oxygen measurements be made in high-density commercial ponds?

• Every two hours

• At dawn and dusk

• Noon and midnight

• Once a week

Usually come in modules of two to four tanks and are connected to a common filtration system, in which the entire population is moved when critical standing crop has been reached.

• Multiple rearing

• Crop splitting

• Sequential rearing

• Critical standing crop