It's only one plant so following the instructions on the bottle should be easy just don't hit her with full strength nutes right of the hop. It is also 3 months old so I would definitely try at well over have the recommended. It's done vegging so don't give it much Grow and Give it extra Bloom.
I have'nt posted in this thread in a while but here's an update on my girls.
NYC Diesel, 4 weeks flowering:
Kush first week flowering:
600w, Dwc(Diesel), Soil(Kush).
Thats a 3 month old plant? ok. Well it looks great and yes start feeding her. You say you have all nutes, but you don't say what you have so I can not help with suggesting what to use or how much.
That there is the claw. It's usually associated with nute burn. I have not had a single kush plant grow without clawing on me and it has never affected yield quality or flavor of the bud.
You got a lot of room in that tent. You can let them veg longer and it will produce more yield. You can also start to tie them down or supercrop. Looking great.
Here is some new pics of the Kush. They are looking much better now since I defoliated and am using full strength nutes and supplements. They are getting there dark green back and the flowers are now starting to pop up everywhere. Looking good. The biggest one is 3 foot 9 and the smallest is 3...