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8 <br /> <br />through a microscope. Collections of preserved eggs and larva will be <br />kept for taxonomic work. <br />Hatchery Modifications <br />An Lp gas water heater has been incorporated in a single pass system to <br />incubate eggs within the hatchery building at Willow Beach. Approxi- - <br />mately 5 gallons per minute is being heated. This water will be used to <br />advance spawning of humpbacks and squawfish indoors with increased hours <br />of daylight and for egg incubation and hatching. <br />A design for a recirculation system for the Willow Beach hatchery <br />building is in final form. It will filter and sterilize water for <br />filling ten tanks. Each tank will be a separate recirculation system <br />with pump, ammonia removal filter, electric immersion heater, and possibly <br />a re-aeration column or aerator. Therefore, different temperatures, <br />water qualities, etc, can be used for experimentation throughout the <br />year. <br />A contractor will be hired to put in the wiring for the operation of <br />the electrical components. The plumbing will be done by Willow Beach <br />personnel and/or a contractor. The time for this work to be done depends <br />on the needs of the hatchery. The target date is October 1, 1980. <br />A bypass pipeline is being installed by the Young Adult Conservation <br />Corps (YACC) at the Logan Fishery Experiment Station to route colder <br />water around pools where adult squawfish are being held. It should be