True/False
Indicate whether the sentence or statement is true
or false.
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1. |
It is
very easy to manipulate the water temperature.
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2. |
The
best place to measure DO in a trout raceway is in the middle.
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3. |
Ionized ammonia is less toxic than un-ionized ammonia.
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Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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4. |
Trout
typically need water with DO levels higher than _______ ?
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5. |
Nitrosomonas and Nitrobacter oxidizes NH3 and NH4 to what final
product?
a. | nitirite | c. | ammonia | b. | nitrate | d. | detritus | |
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6. |
Which
of the following will work to precipitate silt and organic turbidity?
a. | old
hay | c. | alum | e. | all of the
above | b. | gypsum | d. | lime | |
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7. |
What
do grass carp control?
a. | mosquitos | c. | vegetation | b. | native
fish | d. | detritus | |
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Yes/No
Indicate whether you agree with the sentence or
statement.
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8. |
Measure DO at least 10 inches below the surface.
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9. |
The
best time to take DO readings is one hour after feeding.
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Completion
Complete each sentence or
statement.
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10. |
The
color of the water or the botoom affects ____________ absorption.
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Matching
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a. | reduces demand
for oxygen | c. | increases | b. | increases demand for oxygen | d. | decreases | |
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11. |
reduce fish population
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12. |
replace old water with new water
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13. |
plant
vegetation
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14. |
remove excess detritus
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15. |
As
temperature increases ammonia ???
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16. |
As pH
increases ammonia ???
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