A hood and a growing tray for a farming system growing floor are disclosed. The hood is positioned substantially above a support for receiving a growing tray, the hood including: a lighting source; a fluid outlet for providing irrigation to a growing tray, wherein the fluid outlet can be raised and lowered with a mechanism; and a fluid inlet for receiving re-circulated fluid from a growing tray, wherein the fluid inlet can be raised and lowered with a mechanism. The growing tray can include a header pool for receiving fluid ingress from a hood; and a sump pool from which a pump may egress fluid to a hood.