hi.
Most hi-flow tank are ad hoc design. There are some commerical unit that you can purchase.
Most unit that I have seem are race-track style, but there is one similar to the cylindrical tank in the article at:
http://www.rsmas.miami.edu/groups/hatchery/index.html
These tanks are usually gear toward large volume hatcheries. The use of propeller is one of the more efficient design for low-pressure, high volumn pump.... I don't know what specific info you are looking for, since they are just a simple vessle after all.


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