The success of other hatcheries
using water from a common
source is the best indicator of the
suitability of a particular water.
Obviously, if poor water quality at
other hatcheries is causing low survival
of eggs or fry, or if costly
treatment is required to make the
water suitable for use, then it may
be wise to seek an alternative
water source. If there are no other
hatcheries in the area and the quality
of the water supply is questionable,
a pilot-scale hatchery can be
constructed to ensure that the
water is suitable for use