I would recommend using 1/2 to 1/4 strength to foliar feed.... it should tell you amounts you can use on the back of the label, using a hand spray bottle can get tiring so invest in a pressurized pump sprayer... also invest in a PPM meter it will help you know what the waters like that comes out of your tap.. a good rule is to allow your water you will use to sit in an open container for 6-8 hours than the chlorine will evaporate....