Water Temp. And Thermoclines - Eagle MagnaView Installation And Operation Instructions Manual

BOAT'S DIRECTION OF TRAVEL
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One of the best ways to get fish arches is to expand or "zoom" a
segment of the water. For example, from 45 to 60 feet. The smaller the
segment, the better the screen resolution will be. The easiest way to do
this on the MagnaView is with the Zoom feature. This feature expands
the echoes, making it easier to see detail. For the best results, turn the
sensitivity up as high as possible without getting too much noise on the
screen. In medium to deep water, this method should work to display
fish arches.
If you see fish signals when the unit is in the manual mode, but don't get
fish symbols when the Fish I.D. feature is on, try increasing the
sensitivity's level.
WATER TEMPERATURE AND THERMOCLINES
Water temperature has an important-if not controlling-influence upon the
activities of all fish. Fish are cold blooded and their bodies are always
the temperature of the surrounding water. During the winter, colder
water slows down their metabolism. At this time, they need about a
fourth as much food as they consume in the summer.
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