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poor water circulation
Choose an answer
To prevent a bather from diving into
Algae primarily forms in a pool
1 2 too shallow of water, depth markers
because of
should be
3 Recommended range for pH 4 A skimmer weird
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Terms in this set (50)
To prevent a bather from On horizontal surfaces around the pool, on vertical
diving into too shallow of surfaces within the pool, a minimum of every 20 feet.
water, depth markers
should be
Why is high pH a problem Irritate eyes of patrons, reduces effectiveness of
in a swimming pool? chlorine, results in cloudy water
, Cyanuric acid is sometimes 50 ppm
used as a stabilizer and
must never exceed
Which filter type removes Diatomaceous Earth
the smallest particle size?
Algae primarily forms in a poor water circulation
pool because of
A skimmer weird prevents floating debris from re-entering the pool
If you need to raise free 30 minutes
chlorine quickly, how long
should patrons wait after
manually adding chlorine
to the pool?
If swimmers complain of a A. Breakpoint chlorination
chlorine odor (from
chloramines), it can best be
removed by
a. breakpoint chlorination
b. doing nothing, odor will
gradually disappear
c. adding soda ash
d. Backwashing
acceptable level of free 1-3 ppm
chlorine in swimming pool
is
acceptable level of free 3 ppm
bromine in swimming pool
is (1,3,5, or 8)
To lower the pH, what may Muriatic Acid
be added to the water
What chemical should you Calcium Chloride
use to raise the calcium
hardness?
The hypochlorinator 1. Hypochlorinator tubing may be damaged
appears to be working, but 2. Liquid chlorine vat may be empty
no chlorine is in the pool. 3. Injection fitting might be clogged
What could be the
problem? (3)