your not mixing the 4.01 and 7.01 together right ? i only use the 7.01 to calibrate my ph pen and it seems to work fine on my cheap ass milwaulkie meter.but i would def use distilled or r/o water to make your slurry so you know its starting off clean,imo you will get a more accurate ph reading that way.your nutes being organic are going to show low on the ec/ppm test.but as others have made mention,get that ph up to 6.2 to 6.6 range and keep on rolling,plants will look even better in a few days if ya can just get the ph more into range for soil.so many people i know dont even check ph and have pretty good grows so dont get too anal on it,just do your best to correct as you feed.peace
