Harvest Question/Bud Porn

Ok so I've started the final flush on one of my girls.Was just wondering,is it normal when you first start feeding plain water for the leaf tips to appear burnt/nute burnt to start with?Its not nutes burn cause she's never had a full dose yet,ever.Here's a couple of pics
You can't see the burnt leaf tips on these but i just thought Id let you guys have a look.
And here's a lady i just harvested-she's still got 2.5 weeks of drying

Peace

Lol its a bump

you're fine....look's nice.What strain?

Its called 'Section 6',from Freedom Seeds.I only bought the seeds cause they were cheap,not knowing they'd grow so well.Its a nice strain,and from what Ive tried its good smoke,although I won't have any properly dried till next week.