Not sure what this is

[MikealB]

Running plants in coco, feeding at 800ppm, lights at 800 par, ph 5.6 - 6.0. Not sure if this is to much light or a deficency of some kind. Not alot of this so far, only on new leaves.

 

[Stunned]

are you feeding calmag?

 

[Calvados]

Have you noticed any bugs (crawling, flying, or nesting)? Have a close look under the leaves for white spots.

 

[MikealB]

are you feeding calmag?

Yes, using ro water and bumping to 250 ppm with calmag.

 

[MikealB]

Have you noticed any bugs (crawling, flying, or nesting)? Have a close look under the leaves for white spots.

Checked for bbugs, all clear.

 

[Emilya Green]

Running plants in coco, feeding at 800ppm, lights at 800 par, ph 5.6 - 6.0. Not sure if this is to much light or a deficency of some kind. Not alot of this so far, only on new leaves.

I am thinking toxicity... back off on the nutes a bit. Hard to tell though from a single isolated picture of a leaf not giving any indication where it is on the plant. I am thinking mid level up near the top to be presenting with this sort of spotting.

 

[MikealB]

Here are a couple more pics. These are on my Durban Poison auto flower.

I am thinking toxicity... back off on the nutes a bit. Hard to tell though from a single isolated picture of a leaf not giving any indication where it is on the plant. I am thinking mid level up near the top to be presenting with this sort of spotting.

I did post a couple more pics. And thank you for responding.

 

[Emilya Green]

I wish I could see the true color, but I am guessing they are a pretty good dark green. The damage was right where I thought it would be and it confirms my thoughts. You have done quite well with an auto to get it to that size!

 

[MikealB]

I wish I could see the true color, but I am guessing they are a pretty good dark green. The damage was right where I thought it would be and it confirms my thoughts. You have done quite well with an auto to get it to that size!

Thank you, I did back off on the nutes. Plant on the right is 6 weeks old, one on the left is 5 weeks.

 

[MikealB]

Still at a loss, things are not getting any better. Have backed off on the nutes and the run off is at 5.8 ph and the ppm is at 800 to 850. This is on the critical orange punch, the durban poison is doing fine.

 

[MikealB]

Here is a pic of the leaves out of the tent.

 

[Emilya Green]

that looks to be a calcium deficiency