Is anyone else doing this? I would like to get one set up for compost tea applications. I have set the pressure chamber to the minimum setting (15 psi) Which nozzle to use? Flat spray nozzle "row treatment", jet stream with swirl plate (hollow cone spray) or other? Not included with the sprayer but should I get? "Pressure control gauge - displays spraying pressure so operator can maintain desired pressure level" "4 nozzle spray boom - mounted on back of sprayer with 4 hollow cone jets for area treatment, total width 50"" Anyone know what this "480050 Bio-Spray Attachment" is? Anything else?