Help needed

[NewLeaf]

Why my leafs turn like this: https://imgur.com/pslYjhm I am hydro grower and my plant is now in flowering. My ph is in range 5.5-6.0. I give GHE flora series nutrients Bloom 20ml and Micro 10ml. And i have this problem only in upper leafs. I do not give any Grow, because they are already very tall and large. And my grow room is 80cmx80cmx180cm and i have a 600watt light.

[Mr.furley]

NewLeaf, I am not a hydro guy but someone else will be by soon.
Looks like maybe cal-Mal and iron. Are you feeding any?
What color are you roots?

[NewLeaf]

Roots i do not know what color they are, because it is a big hydro i can´t lift it up and see the roots. I´m feeding her just Flora Bloom and Flora Micro, because she is in flowering now.

[Mr.furley]

I do believe that you should be checking your roots, they should be white in color only. Can you post a picture of your setup and a little more info on what you have done to now and if you have changed anything before this happened. Do you use flora klean? Or any rot flush?

[Mr.furley]

Hydroguard?

[NewLeaf]

Hi. My girls are now ready and harvested and roots where white no signs of root rot at all. 3 plants and yield is probably around 250grams-300grams. Well i don´t have any idea what was the problem.

[Mr.furley]

Glad you got to Harvest.

[NewLeaf]

Yes, but i will grow same strain next time, but in bigger grow tent, i hope the problem does not come back. No one here helped, but you tried so thanks for that.