Yeah well it's i'ts not a nute lock out from a high ph as small as these plants are,,,,,and the ph for soil needs to be 6.8 ....you can't tell him to water with 6.0-6.5 water untill you know what the runoff ph is.......the run off may be 4.0 or 7.9 so you have to adjust the ph of the water to suit this...