Electrical Conductivity Test

I started testing my runoff too after many lockouts. From what I know, it's not a good sign. It could mean that salt build ups have formed in the root zone and have been dissolving in the water as it passes through the soil. If on the contrary, it was lower, it would've meant that the nutrients stayed in the soil, a good sign. I now give water twice before feeding and don't seem to have that problem anymore.