Nitrogen excess in flowering

Hello guys, this is my first post here, I'm a novice grower from Costa Rica, currently on my second round ever at growing cannabis.

I have 6 plants on me, on which I have had the time and patience to experiment and learn, I'm now ending week 4 of flowering but I've had this feeling during the whole thing that my buds weren't growing right, and yesterday I noticed that my leaves are very dark and they're starting to get a claw, it isn't that bad as of now, but I want to know what should I do next, and if I have any hope of my plants coming back from this one and growing some decent buds if the right measures are taken.


I'm using Floraflex B1 and B2 nutrients, plus potassium and phosphorus, and calmag on a 500w LED light.

As you can see I got some clawing going on, nothing too extreme, and my buds are small as shit.

Kind of hard to make any real judgment calls with the light on. But as far as bud structure is concerned, there’s 2 main elements that will have the most impact....1-Strain. 2- Lights. A good light won’t make a strain not known for being a heavy yielder produce heavy yields, just as a weak light won’t allow a heavy yielder to reach its full potential.

Buds look normal for 4 weeks. Give it time.