Thanks for stopping by and all the good comments. Hell I don't have a clue how I can screw up like I did, oh wait it's not to hard for me. All I know is the next day the girls all had burnt leaf tips and edges. About the only thing it could be if I'm reading it right. I flushed with at least 6 liters of water per plant, they are in 2.5 liter pots, and I'm waiting for them to dry so I can put some P and cal/mag to them plus some trace. They have a long way to go so I will have to talk to them very nicely and baby them. the way it is looking it should be fair harvest when it comes.
Had the same problem when I was using Miracle Grow. Haven't had the problem after switching to Blue Planet. I really don't know what I'm doing either. The sample size is too small to make a decision one way or the other but so far the BPN seems good. Before I figured out I was burning the plants with nutes, I added blood meal because I thought I had a nitrogen deficiency and that did help a bit.
Before I switched nutes I flushed them by running the garden hose through each pot for a few minutes so that could have fixed the problem too.