As a starting point, pre-aeration tanks used in many existing catfish hatcheries provide a turnover time of 10 to 15 minutes (a capacity of 1,000 to 1,500 gallons for a water flow of 100 gallons per minute).
As a starting point, pre-aerationtanks used in many existing catfishhatcheries provide a turnovertime of 10 to 15 minutes (a capacityof 1,000 to 1,500 gallons for awater flow of 100 gallons perminute).