The key thing is to plant or recondition them first you need to get the fish into the reconditioning vessel or planted in the lake as soon as possible after arriving at the hatchery. If you hold them you need to treat for fungus weekly, have very good flows and best if the water depth is around 4 ft. If the hatchery sets on the fish for any length time things go down hill fast. One should remember that the hatchery's main concern is eggtake so it is a balancing act at best.