Can anyone identify the problem?

[TrashcanPicker]

Have not seen this while growing yet? Potassium?

Strain- Space candy
FFOF
General hydroponics 3 part trio
3 weeks in flower.

 

[Dontjudgeme]

Here’s a hefty little guide.
Also, I know Ocean forest has all the Nutes you need, just water with ph’d water. That trio might cause over feeding at some point.

 

[TrashcanPicker]

Here’s a hefty little guide.
Also, I know Ocean forest has all the Nutes you need, just water with ph’d water. That trio might cause over feeding at some point.

Thanks I have seen that. Just didn’t look like anything in the pic. My babies vegged for two months. Didn’t rly start adding nutes till transition

 

[CannaCountry]

If you look closely at your pics, you'll see pests. Not sure if they are responsible for what you've posted or not. I would say going off just the one leaf, you may have a K shortage looking at the leaf edges, but I'm not sure one leaf is enough to make such determinations. If I saw it across the whole plant; that would be different. Good luck.