Grow update, with leaf problem

[stinkyattic]

nute defficiency is a bit different to nute excess..

They go hand in hand in a lockout situation. An excess of one can cause a deficiency of another. You should read up on this.

would it benefit to flush again in 24 hours do you think?.

I'd wait a little while. Monitor new growth if there is any this late in flowering, and see if the problem stops getting worse.

ph is currently at 6.5-7, .

Good, good...

if that makes any difference by the way..

Yup, it does.