Hypothetically speaking

let’s just say one has a plant in flower (ehh let’s say the beginning of week four) and has what looks like to Be nute burn ( tips look dry (brown) and curling up)
since the middle of week two , but nothing you do seems to correct it. What can one do?

Let’s jusy say for example
In soil
Bag seed
Organic.
Ph at 6.4-6.5

Could it be lacking anything?
 
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