What’s causing these faded spots?

I know it’s kinda hard to see but the lower plant has a few spots that are kind of faded. They aren’t yellow spots or like any other I’ve seen. It’s like the leaf was painted green and the coat of paint went on a little thin in a few spots.
For the record, they are diesel feminized 18 days from sprout, under an HLG 320 LED…..grown in coco amended with dry organics.

Maybe early Mg deficiency.

PadawanWarrior said:

Maybe early Mg deficiency.

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I think u were right….those washed out areas appeared just before I started giving cal mag.
I usually don’t give much of anything until they are a couple weeks old and these seedlings grew fast…..so they were decent size before they got the cal mag. I’ve since given twice and the faded areas are gone.
This is only my second run in amended coco and am figuring things out as I go. Thanks for the input.

PadawanWarrior said:

Maybe early Mg deficiency.

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Agree

hotrodharley said:

Agree

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So I wanted to ask about a current issue..when I posted back a few weeks ago, I had some mild fading in spots and the consensus was early mag def. I began giving regular cal mag and they went away.
Those 2 plants are still in the 1 gal pots and have not been too dressed, only given cal mag every other watering, cannazym, and recharge.
I’ve topped and tried to bend them out to create a flat canopy…..the growth has slowed so I plan on moving to 5 gal pot tomorrow.
The issue is one plant is darker green, maybe a touch too dark….as in too much N. But otherwise looking fine.
The other one is noticeably lighter in color and I just noticed similar yellow patches on one of the lower fan leaves. I think she looks hungry and has no doubt sized out of the small pot.
What do you see from the pics?? Do u think it’s lack of Mag again?? Or does the plant need more N?
I’m moving them tomorrow and have amended the coco with essentially the same as before….although I weighted the bottom layer with a higher ratio of bloom amendments, as I figured I’d flip to 12/23 after 2-3 weeks in the larger pot.
Thanks for all of your generous advice and I hope you have a great holiday season.

Bullmark said:

So I wanted to ask about a current issue..when I posted back a few weeks ago, I had some mild fading in spots and the consensus was early mag def. I began giving regular cal mag and they went away.
Those 2 plants are still in the 1 gal pots and have not been too dressed, only given cal mag every other watering, cannazym, and recharge.
I’ve topped and tried to bend them out to create a flat canopy…..the growth has slowed so I plan on moving to 5 gal pot tomorrow.
The issue is one plant is darker green, maybe a touch too dark….as in too much N. But otherwise looking fine.
The other one is noticeably lighter in color and I just noticed similar yellow patches on one of the lower fan leaves. I think she looks hungry and has no doubt sized out of the small pot.
What do you see from the pics?? Do u think it’s lack of Mag again?? Or does the plant need more N?
I’m moving them tomorrow and have amended the coco with essentially the same as before….although I weighted the bottom layer with a higher ratio of bloom amendments, as I figured I’d flip to 12/23 after 2-3 weeks in the larger pot.
Thanks for all of your generous advice and I hope you have a great holiday season. View attachment 5238987View attachment 5238988

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Sorry my typo….meant to say haven’t top dressed at all..,,,,also will be flipping to 12/12 not 12/23, after they’ve been in the larger pots for 2-3 weeks. Thanks.

Bullmark said:

So I wanted to ask about a current issue..when I posted back a few weeks ago, I had some mild fading in spots and the consensus was early mag def. I began giving regular cal mag and they went away.
Those 2 plants are still in the 1 gal pots and have not been too dressed, only given cal mag every other watering, cannazym, and recharge.
I’ve topped and tried to bend them out to create a flat canopy…..the growth has slowed so I plan on moving to 5 gal pot tomorrow.
The issue is one plant is darker green, maybe a touch too dark….as in too much N. But otherwise looking fine.
The other one is noticeably lighter in color and I just noticed similar yellow patches on one of the lower fan leaves. I think she looks hungry and has no doubt sized out of the small pot.
What do you see from the pics?? Do u think it’s lack of Mag again?? Or does the plant need more N?
I’m moving them tomorrow and have amended the coco with essentially the same as before….although I weighted the bottom layer with a higher ratio of bloom amendments, as I figured I’d flip to 12/23 after 2-3 weeks in the larger pot.
Thanks for all of your generous advice and I hope you have a great holiday season. View attachment 5238987View attachment 5238988

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Looks like early phosphorus deficiency there.

hotrodharley said:

Looks like early phosphorus deficiency there.

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Hey there HRH, I hope you and your family are having a nice holiday. i wanted to show you a recent pic of my grow…,specifically one of the 2 plants.
I moved them to larger pots about a week ago.
I thought I wanted to go w/ 7 gal pots since I reduced the number of plants from 3 down to 2.
However, once I got the first one transplanted, I regretted it, so one plant is in a 7gal and the other I went with a 5gal.
Anyway, the 7 gal plant is the one that’s had the faint spotting all along. You can see in my pics that the edges and tips are turning lighter along with some taco-ing.
Only the 7gal plant is showing this fade but both have some clawing as well.
My biggest concern with such a big pot is watering. Keep in mind I’m growing in coco amended with dry organics…..I don’t wanna let it dry out completely but I also don’t water daily….and I want minimal runoff, preferably none. Basically keep it moist without flooding it and having all my amendments leeched out.
The damn pot is so tall and narrow it’s tough to know exactly how to go about it. There’s so much space between the existing roots and new medium…..
The medium is amended with several dry organics including bone meal which is very high Phosphorus……
I’ve watered once since the transplant and added in 4ml/gal of cal mag
My light is exactly 24” above the canopy and running at about 75% intensity.
What does this look like to you??