Magnesium deficiency or what is it?

[BayAreaIndica]

10 gallon air pot coco coir, perlite, worm castings. She was doing fine with cheap leds until I switched her to the big led. but she looks healthy apart from the look of the loss of chlorophyll pigmentation. She’s huge doing better than any other plant at 5000 ppm, I’ve never gone so strong but no signs of stress or nute burn whatsoever compared to other plants getting nute burn as low as 1800 ppm. From my understanding it’s magnesium deficiency can anyone say other wise?

 

[jguit]

Doesn't look like mg. Iron perhaps?

What are you feeding it? 5000 ppm certainly can't be correct.

 

[ComfortablyNumb]

Flush and give a mild feed.
Cut lights by 5%
Add cal-mag (coco eats mag)
Wait and watch.

 

[ComfortablyNumb]

In the meantime, lets see a pic in regular white light.

 

[BayAreaIndica]

Here’s the deal with this girl… she looked like this when I first put her under the strong led… I was going to toss her I ended up keeping her and leaving her as a side chick under cheap leds she got much better and bigger, as soon as I put her under the strong lights again (as a much bigger plant x3 times) she goes back to how she was? And yes her ppms is at 5000 right now, I’ve never ever fed any plant over 2500 and she’s thriving at 5000 but ever since she was a small plant in veg she showed that exact same chlorophyll pigmentation discoloration. I’m feeding her a lot of cal mag already, I can’t dim the lights.