leafs tips are burnt (see pics)

[dandanbo]

Hi
my plant is about 5 weeks old outdoor grow I notice that some of the old leafs tips are burnt (see pics)
PH is 7 (not accurate)
I start to give it BIO Grow 1 cc for a liter last week
:: BioBizz-BIO Grow

any Ideas
Thanks

dandanbo Reviewed by dandanbo on 06-23-2011. leafs tips are burnt (see pics) Hi my plant is about 5 weeks old outdoor grow I notice that some of the old leafs tips are burnt (see pics) PH is 7 (not accurate) I start to give it BIO Grow 1 cc for a liter last week :: BioBizz-BIO Grow any Ideas Thanks Rating: 5