WorksheetsWater Quality Phase 2 Test
Total questions: 27
Worksheet time: 9mins
What is water hardness?
The amount of dissolved calcium and degassing
The amount of dissolved ammonia and nitrites
The amount of dissolved oxygen and potassium.
The amount of dissolved calcium and magnesium.
What is the optimal level for water hardness in an aquaponics system?
0 ppm
50-100 ppm
50-300 ppm
10- 20 ppm
What are the causes of water hardness?
Dissolved liquids
Low pH levels
Rocks
High ammonia levels
Use the image to decide whether it is hard or soft water.
Soft Water
Hard Water
Use the image to decide whether it is hard or soft water.
Soft Water
Hard Water
Use the image to decide whether it is hard or soft water.
Soft Water
Hard Water
How does hard water affect an aquaponics system?
It causes pH levels to increase
It does not affect an aquaponics system.
It affects ammonia levels
It causes pH levels to drop drastically
What does KH stand for?
Potassium hardness
Carbonate hardness
Kilo Hardness
General Hardness
How to treat water hardness?
Remove ammonia out of the system
25% water change
Use Sera Super Peat
Do not overfeed the fish
What is alkalinity?
It acts as a buffer to protest against nitrite spikes
It acts as a buffer to monitor overfeeding
It acts as a buffer to protect against ammonia spikes
It acts as a buffer to keep pH levels from shifting
What is the optimal alkalinity levels for aquaponics?
100 - 200 ppm
50 - 300 ppm
0 ppm
50 - 70 ppm
How can you evaluate if plants are iron deficient?
Dark green leaves
yellow or brown leaves
branches begin to break off
Fast growth
What is Chlorosis?
Abnormal leaf growth
Abnormal reduction of green coloration
Abnormal forms of dark green leaf coloration
Slow plant growth
What is the optimal level of Iron?
1 - 2 ppm
0 ppm
1 ppm
2 - 3 ppm
At what level of iron will you notice yellowing leaves?
0.5 ppm
1.5 ppm
3 ppm
2 ppm
What is the best iron supplement for Aquaponics?
Calcium
Fe-DTPA
Potassium Bicarbonate
Magnesium
What is free chlorine?
Ineffective against bacteria
Active Chlorine
Dissolves oxygen
Fights off ammonia
When does chlorine become inactive?
during the niitrifying bacteria process
Before organic matter enters the water
After it kills organic matter in the water
After the water is changed or cleaned
What is the formula to find out how much chlorine is in water?
FC - CC = TC
TC - FC = CC
CC - TC = 2 ppm
TC - TC = CC
What is the optimal level of chlorine in an aquaponics system?
1 - 3 ppm
0 ppm
5 - 6 ppm
0.5 - 1 ppm
What is the optimal levels for ammonia in an aquaponics system?
Greater than 3ppm
Between 0-0.5ppm
Around 2ppm
Between 1 and 2ppm
What is the optimal levels of nitrites in an aquaponics system?
Between 0-0.5ppm
Greater than 3ppm
Between 2 and 3ppm
Around 1ppm
What is the optimal nitrate levels in an aquaponics system?
5ppm
Greater than 300ppm
Between 50-100ppm
Between 0-0.5ppm
What is the optimal levels of calcium for an aquaponics system?
100ppm
Between 40-70ppm
Between 100-200ppm
Between 10-20ppm
What is the best way to lower pH levels in an aquaponics system?
Complete a 25% water change
Add 2TB of iron chelate
Add 2 cups of calcium supplements
Add potassium bicarbonate to the system
What is the purpose of dissolve oxygen?
It only matters when levels reach 20ppm
It is mainly important for certain plant life.
It is essential to the survival of fish.
Dissolve oxygen is not that important in aquaponics.
What is the optimal levels of dissolve oxygen in aquaponics?
> 5ppm
Less than 1ppm
10ppm
0ppm
