How can i fix?

Sorry, I didn't spot using light mix. Make sure you us water feeds for at least a few wk before switching to bloom. Just maybe a little cal mag. And when feeding soil you know that 1ml should only be given once a wk right? Soil has a steady PH of 5.9 but still because you are getting that reading from run-off? (Which u should not have, unless it on purpose.) Regular feeds of water after nutes given for the rest of that wk, especially before switching to bloom I'd just give cal with 6.5-6.8 max PH for soil for at least 1.5 wks before switching to bloom. Are you using a micro it helps uptake of different nutes and just nutes in general?

I used Biobizz Grow 1ml/l and BIobizz Bloom 2ml/l, but i red somewhere that the EC meter cant show the organic feeds EC.. So how can i fix this? Can i water with distilled water and nutrients? I think my water is not usable.. sry for my bad english