Aerojet 2 Tray, Botanicare. Gardeners can get aggressive growth rates with the power of aeroponics and the Two-Tray Aerojet expandable hydrogarden. Microjets spray plant roots with nutrient solution while simultaneously delivering high levels of oxygen, creating an ideal growing environment. Mist settings can be switched from continuous to periodic bursts of one-minute-on and four-minutes-off. Includes high-output 350 gallon per hour pump, fittings, ten gallon reservoir, and two trays with six four-inch net pots each.