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    David Velasco

    Hi Alain

    The Eco will need at the very least 60 cm of water above the transducers in order to get all three layers.  However, this assumes "optimal" operational conditions.  So even if you have 60 cm of water, you may still not get all three depth layers at all times due to external factors such as the amount of turbulence in the water, how smooth/wavy the water surface is, and the Eco's tilt, for example.  Also, if you are deploying your Eco at a higher elevation (typically greater than about 300 m above sea level) and the Eco was not started in air, then this may also impact the minimal water height in order to get all three layers at a time--see the below FAQ for more information on this.

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