So do you think, that my nute lockout was caused by this? By just using plain tap water, and the ph of the water is 7.2, together with Pro-Mix untreated, the runoff comes in over 7.0. Thus am I concluding properly, that is the reason of my nute lockout??

And now is the time that I should do the dreaded flush to try and save them, right?
faceto27 Reviewed by faceto27 on . Need help with nutrient lockout Hope somebody can clear this up for me. I am almost 100% that I have nutrient lockout and that it is being caused by a ph problem. Sorry I don't have any pics to show, but from what I've seen and read, I am sure it is a nutrient lockout. I have 8 plants. 3 of them have burnt tips and edges and turning yellow. 2 of them show an Iron deficiency, and the other 3 look very healthy. The medium I am using is Promix. I water with regular tap water, the ph on the tap water is 7.2 to 7.3. This Rating: 5