Blower operation controls operation method: Each blower for the aeration chamber shall be controlled by the 24-hour, 7-day time clock and shall be capable of being programmed to control the blower run cycle and to adjust both the start set point every 15 minutes on the 24 hour cycle. The clock also includes a skip-a-day feature which will allow a separate program. The clock shall be by Paragon,Model #1015. A Selector switch will be provided with off and on time clock operation.