Almost to harvest; what are these orange spots on my leaves?

[Auto-Bud-Man]

I'm coming up on harvest of my NL Auto. It's day 66 and I have brownish/orangish spots appearing on the new growth.

Before this, I thought it was a Cal-Mag issue. Is this what I have again or is this related to being close to harvest?

 

[Rev. Green Genes]

Either needs calmag, or pH is off. I'd bet on calmag, what soil and lights?

 

[Auto-Bud-Man]

Either needs calmag, or pH is off. I'd bet on calmag, what soil and lights?

Soil: 40% OF, 40% pro-mix, 20% perlite
Light: one autocob.
PH good at 6.4

I just added 2 tsp cal-mag, hopefully thats whats going on

 

[AutoWonders]

In the meantime, here are some pics to look at and to get used to.

* staff edit-- please don't send people to other grow sites... we have a better combo of info right here in the Infirmary with the defc. Pic Depot and the Self diagnosis thread (text heavy)

 

[Auto-Bud-Man]

In the meantime, here are some pics to look at and to get used to.

www.growweedeasy.com/marijuana-symptoms-pictures

Thanks!

 

[Waira]

...looks P defc. to me, lights distance may be too close,.. how far away is it?

 

[Auto-Bud-Man]

...looks P defc. to me, lights distance may be too close,.. how far away is it?

Lights are about 16" to 18" away from all of the affected areas (the higher colas are slightly closer)

 

[Waira]

:smoking:... forgot to add, you're a ways off from harvest yet,... meantime, let's see what the Ca-Mg does (it still might be that, Ca and P defc. symptoms can overlap sometimes)... what else are you feeding? Bloom nutes should have been in full swing.... Light distance is borderline too close, and could be why the immediate proximity of the affected tops are why they are showing the symptoms....all LED seems to put higher demand on Ca.... see if you can bend the tops away from such direct blasting, if you can't raise them up a bit more,...

 

[Auto-Bud-Man]

:smoking:... forgot to add, you're a ways off from harvest yet,... meantime, let's see what the Ca-Mg does (it still might be that, Ca and P defc. symptoms can overlap sometimes)... what else are you feeding?

1/3 dose MegaCrop, 1/2 dose Sweet Candy, 3/4 dose PK Boost.

Bloom nutes should have been in full swing...

Im inching that direction

. Light distance is borderline too close, and could be why the immediate proximity of the affected tops are why they are showing the symptoms....all LED seems to put higher demand on Ca.... see if you can bend the tops away from such direct blasting, if you can't raise them up a bit more,...

I bet you’re right, all of the ca-mg issues are in the center and the stalks on the outer perimeter are unaffected and taller, ill move it up a bit.

Thanks for the help.

 

[Waira]

nutes blend looks OK, but I'd take a TDS/EC reading to get some numbers to base of of with those dosage amounts,.. i was a bit surprised with how low the ppm's were doing the same thing with MC and Bud Explosion and SC,...