ph burn problem

looks like i have ph burn problem, but only happens in flower stage not veg. my ph is 7 ( i no its slightly high) and my water is slightly hard. need help!

Does it happen from about week 4 flowering onwards? Leaf tips burning and curling up?
I've had the same problem and thought it was a high ph problem but it was just too much nutes and salt buildup.

Pics Please but to my my blog .. https://www.rollitup.org/blogs/blog32237-flush-baby-flush.html

pH burn??
Post some Pics,

Starting to think nute burn now!

I thought it was pH burn due to starting in the middle and working its way out rather than the other way around. its mainly on the lower to mid leaves and approx 20% of them, the rest of the plant looks great. hope some can help.

steve'o'.

check it out u dont always need us to help u out

ye im a little confused, started off looking like pH fluctuation then ended up like nuke burn

recieved my pH tester today and managed to lower pH to 6.3 with a very tiny drop of lemon juce, then going to flush for a few days and start nutes at half dose.