Is this light burn

[Vza1]

It's on the top part of my plant.

 

[lokie]

It's on the top part of my plant.View attachment 4907739

How close has the light been and what type of light?

How to Spot and Treat a Light Burn on Your Cannabis Plants

Light burn is the yellowing of your plant leaves as a result of excessive lighting saturation or proximity of the plant to the light source which puts some...

cannabis.net

 

[Vza1]

How close has the light been and what type of light?

How to Spot and Treat a Light Burn on Your Cannabis Plants

Light burn is the yellowing of your plant leaves as a result of excessive lighting saturation or proximity of the plant to the light source which puts some...

cannabis.net

It's 12 inches away ts 1000 mars hydro led

 

[FastFreddi]

It's 12 inches away ts 1000 mars hydro led

Are you hammering it with calmag? Looks like beginning of magnesium deficiency.
FF

 

[FastFreddi]

Meaning if you are, you could be locking it out , either because of too much calcium, it's antagonistic to magnesium or too much magnesium, simply locking it out.
FF

 

[MICHI-CAN]

Leaves are flat and not turning or twisted. Listen to @FastFreddi

 

[FastFreddi]

Meaning if you are, you could be locking it out , either because of too much calcium, it's antagonistic to magnesium or too much magnesium, simply locking it out.
FF

If that makes sense, my apologies...8m fairly medicated by this time.
Peace.
FF

 

[FastFreddi]

Leaves are flat and not turning or twisted. Listen to @FastFreddi

Yessir and that ...hope you're well this evening @MICHI-CAN .
FF

 

[MICHI-CAN]

Yessir and that ...hope you're well this evening @MICHI-CAN .
FF

TY. AS well as I'll ever be ATM. But the next is sure to be better.

Peace and humor.

You got this one.

 

[lokie]

It's 12 inches away ts 1000 mars hydro led

Provided it has never touched the light light burn is not likely.

Any other leaves have this symptom?
At what stage is this? Only on top? Any mid or lower leaves?

 

[MICHI-CAN]

Provided it has never touched the light light burn is not likely.

Any other leaves have this symptom?
At what stage is this? Only on top? Any mid or lower leaves?

Apologies @lokie. This dry pen is killing me.

 

[Vza1]

Provided it has never touched the light light burn is not likely.

Any other leaves have this symptom?
At what stage is this? Only on top? Any mid or lower leaves?

Only at the top, about 2 or 3 weeks in flowering it's an auto runtz from barnies. Grown in happy frog. Started feeding big bloom about a week ago at half strength.

 

[lokie]

Only at the top, about 2 or 3 weeks in flowering it's an auto runtz from barnies. Grown in happy frog. Started feeding big bloom about a week ago at half strength.

What other Fox Farm products have you used on this grow?
Any other additives?

Are there other plants that have the same issues?

 

[Vza1]

What other Fox Farm products have you used on this grow?
Any other additives?

Are there other plants that have the same issues?

No other plant has that issue. Using foxfarm happy frog and just started ff big bloom at half strength. I did defoliat way more than I should have a few days ago.