I think joeybsmooth are referring to lack of airflow in an ATBA. Unless it's completely enclosed and air tight I don't think there is much to worry about.
Rubicon wrote:One guess is he might mean the area over the water might be like getting trapped under ice in a pond??? But then they could just swim over.
that could be it. most ATBAs dont actually sit right on the water. they all sit over it so they can still poke their head up to get air
Horsepower is how fast you hit a wall. Torque is how far you move a wall
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