Is this light bleaching or a def? Weird stuff..

getbuck

Member

• Mar 12, 2017

• #1

Only one leaf affected, its right under a 600W HPS (cooltube) but not the closest leaf at all, never seen this before and zero light bleaching in this setup so far. The plant if otherwise healthy and other plants in the room are not showing this symptom.

https://anonimag.es/i/rb1c8ea7.jpg

https://anonimag.es/i/rb2916ef.jpg

 

getbuck

Member

• Mar 12, 2017

• #2

the leaf was below the HPS, near the base, perhaps a weird hotspot or something?

 

sheik_yerbouti

Member

• Mar 12, 2017

• #3

Doesn't look like light bleaching but I also sometimes get random leaves do odd things like that. Never has caused a problem or been a sign of a bigger one.

I've always wondered if I splashed some water on the leaf and in burned or something.

 

getbuck

Member

• Mar 12, 2017

• #4

sheik_yerbouti said:

Doesn't look like light bleaching but I also sometimes get random leaves do odd things like that. Never has caused a problem or been a sign of a bigger one.

I've always wondered if I splashed some water on the leaf and in burned or something.

Click to expand...

My first thought was nute-water + light bleaching, but this leaf is at the top, no chance of spilling water on it. You've had this same symptom?

 

getbuck

Member

• Mar 12, 2017

• #5

plants are starting week 7 of 12/12 (week 6 of flowering probably)

 

Pinball Wizard

The wand chooses the wizard

Veteran

• Mar 12, 2017

• #6

https://www.icmag.com/ic/showthread.php?t=150995

 

Bongstar420

Member

• Mar 17, 2017

• #7

Def light/heat bleach.

You can see the outline of a leaf that overlapped the burnt one in the bleach spot on the central finger in the second photo.

Raising the light is best but cooler temps/air flow can do it if you manage it well.