Not sure on this

[Winged]

Hi all, I'm having a issue, I've just changed to a spider farmer se3000 light from one of their sf series. And in 2 days a few leaves have started to go like the pictured ones, more than a few the more I look.
I have the light 600mm / 24" above the plants on 80%.
The rest of the environment is the same no other changes.
Kinda looks like cal mag deficiency to me, but why happen so fast.
Same type of soil I have used for along time with no worries, no bugs, plenty of air flow, temps around 26-28 degrees ( se qld a bit crap for a while now, but pulled a great awesome buds from the same room just recently) .
The light is the only change.

 

[Porky]

It's cal mag!!

 

[One Drop]

Yep you need cal mag if your in coco perlite mix I’m running se lights and no problems at all

 

[Winged]

It's cal mag!!

Thanks porky

 

[Winged]

Yep you need cal mag if your in coco perlite mix I’m running se lights and no problems at all

No coco just good soil 70/30 perlite mix. Thanks for the reply though

 

[One Drop]

How wet are they could be over watering

 

[Winged]

How wet are they could be over watering

I wish it was only that

 

[Madmick]

What's the wattage of old light compared to new light

Is your PH OK

What EC are you feeding

They might be hungry

 

[Winged]

What's the wattage of old light compared to new light

Is your PH OK

What EC are you feeding

They might be hungry

Spot on they were a bit hungry, I had underfeed them. I had miss calculated the feed ratio, back on track now though. I went back through my dairy and found it, gotta admit I had smoked a fair bit just before.
Thanks for the reply to Micmac, I appreciate the advice from the brainstrust guys here

 

[Madmick]

Don't know about brains trust , killed a lot of brain cells personally , but your welcome