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Automatic
Chemical
Controllers
Operating a swimming pool,
spa, or water feature
without an automated
controller is analgous to
operating your home heating
system without a
thermostat. Constantly
turning your furnace on and
off manually is unthinkable,
yet the majority of swimming
pool and spa operators
control chemistry in exactly
this fashion. Water balance
oscilates between "under
feed" and "over feed" as
operators attempt to
maintain chemistry control
in conjunction with other
work activities. As a
consequence unsafe water
conditions, chloramine
formation, and excessive
organic loading are common
occurrences. 
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