Help with flushing

If you check my last post, I need to take some course of action. I've decided to flush both plants with just water (water machine outside markets) till the PPM stops rising in the resiv. In the past, when I would get signs that there was a problem with nuk lockout, or some kind of a deficiency, I would flush with a cleaner (Clearex Flora Kleen) for a couple hours, empty the old and put in the new. I think where I fucked all those times was even though I always mix my nutrients with less than what the manufactures want you to mix, that was too much starting off fresh. This time I'm going to start with a 1/4 strength. Anyway, your thoughts are more than welcomed. It aint no easy thing to grow good weed, very frustrated