GDP Seedling Not a Picture of Health

Troubleshooting
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1

Granddaddy Purple seedlings 16 days, coco with perlite, Jacks 321.
First noticed the spots two days ago. They now cover more of the leaves and now also seeing a small spot on a second plant.
Got three GDP going

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Bottom left was the first
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The one in upper left corner is just beginning to show the same thing.
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This is from my journal with date, PH & PPM of what they have been fed.

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They have been covered with a 7" tall dome, temps upper 70, RH upper 60s. Under a Chilled X1 Mini, 65w at 10-11" above soil (diffused by dome).

One thing, with the light lime green leaves, it looks like I need to jack up the Jacks.
Otherwise no clue why there are spots.

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What medium are you growing in? It looks like it’s just the very bottom leaves. Are you getting them wet when you water?

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They are in coco. Leaves stay dry. I use a syringe when they are this small.

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Hope you can figure it out I grow in soil and just started using Jacks. I know you have alot of grows under your belt just wonder if you buffered your coco with Jacks. Just asking.

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I gave the coco a good soak in Jacks PH at5.8. I also added CalMag.
I did give them their fist shot of Fish Sh!t on the 13th. First time using it. I don’t think that should do any thing though.

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OK don’t know much about coco except it needs to be buffered and watered every day. I know @Nicky uses Fish Shit.

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I would get them out of the small pace and plant into a bigger pot u will probably find the roots are starting to bound together

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You don’t need calmag. Just full strength jacks front to back. As for container size I would say that’s not relevant. Microbes won’t impact a plant negatively. Even if you gave it to them straight. Are there holes in the bottom of the plastic “pods?”

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Yes there is. It is a standard seedling flat. I fill the spaces I need with pretreated coco and compact it. I am not adding calmag to Jack’s. However I did add it to the Jack’s hydrating solution when I prepared the canna coco block.
I have used this process before and never experienced this leaf discoloration before.

I thought of that, but I know they are are not big enough to transplant and doing so could inflict more damage that what the possible benefit might be. I checked and they do not have roots growing out the bottom yet so they are good for a another day or two.

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Aha ok they should be right for a few more days in the seedling tray

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