Need help with a prob

Whats this nutrient burn ?
These are all appearing around the center most under light buds not burning just leafs here and ther so is and could this be to close to light thats cuasing this ?
These had a flush as i panicked left em few days fed em and still this yellowin they been fed calmag canna flor and canna boost at just under full strengh
Five weeks in flower

So worked out ther gettin to much light suckin up to much nutes cuasing leafs to over work cuasing all sorta shxt switch light down to 400 till i fix the prob tomoz new shade with light spreader to prevent this in future thanks for all the help and replys
Peace

Blakey said:

So worked out ther gettin to much light suckin up to much nutes cuasing leafs to over work cuasing all sorta shxt switch light down to 400 till i fix the prob tomoz new shade with light spreader to prevent this in future thanks for all the help and replys
Peace

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It may not be the light, as much as it may be the feed.
Generally too much light will, just bleach the tops.
If they're drinking a lot, because of the light, then the water quantity goes down, and the ppms rise.
It may be as simple, as cutting your feed a little.
Bare it in mind.
But it sounds like you're on the right track.
Good luck man.

Did you keep going with canna vega for a few weeks into flower? Might had helped stave off the yellow

its a mag deficiency. Your light being to close bleached those leaves right under the light. You have the same problem here and there because of the plant moving mag around.