Magnesium deficiency?

Hey guys,

Got this yellowing on the outer edges of my 5th week flowering Kali Mist.

It’s happening on all the base leaves. Progresses from the outer edges to the centre.

They have been lightly fed and maybe need more food now they are properly budding?

Thanks guys!

P.S Sorry about the HPS photo.

@Dr. Who 'typical Mf def symptoms. Light grn to yellowing spots in between the leaf ridges- towards the ends. Express's early in veg OR anytime your not delivering enough.'

So just like this then? Sounds like exactly what I have. I loved underfeeding as it's so easy to cure lol

In the margins not ON the edges..... Your overfeeding a bit.

established


advanced


Grower is blind and stupid advanced

Dr. Who said:

In the margins not ON the edges..... Your overfeeding a bit.

Click to expand...

But it moves to the margins after the edges, like the small leaf there. Veins remain green too..

No this is not from over feeding. I know that since this problem came when I used water only (was lightly feeding each water) about 3 weeks ago. Then fed, the spotting stopped. Now last watering was pure water and it's really picked up again.

They have only been fed 250ppm and my water is 35ppm with no cal or mag.

Think it's a potassium issue. Will give her a feed and see what's what