Need help figuring out what’s wrong with my 2 1/2 week old seedlings

Grow Cycle
1

I started them in a large pot and mixed a seedling soil (composed of coconut coir, vermiculite, and something else) with an organic potting soil (composed of bat guano, worm castings, bark, and who knows what else). I have been watering with spring water and I have not tested the ph of soil nor water. I also just switched my light from a small LED to a larger 1000w COB LED. In the last couple days the leaves developed some small brown/yellow spots and now the whole leaves are turning yellow. Any suggestions?

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these pics are under different lighting, but are taken at the same time

4

I started them in a large pot and mixed a seedling soil (composed of coconut coir, vermiculite, and something else) with an organic potting soil (composed of bat guano, worm castings, bark, and who knows what else). I have been watering with spring water and I have not tested the ph of soil nor water. I also just switched my light from a small LED to a larger 1000w COB LED. In the last couple days the leaves developed some small brown/yellow spots and now the whole leaves are turning yellow. Any suggestions?

image
image866×1154 601 KB
image
image756×1008 594 KB
image
image866×1154 664 KB
image
image756×1008 621 KB

these pics are under different lighting, but are taken at the same time

5

I’ve seen that tried to get help for a while now. Honestly not sure what’s going on. I noticed that in your 1st and 3rd pic your soil looks really damp. So it’s possible that you are drowning them. Seedlings need little to no water in soil. Seedlings get their moisture from humidity in the air. Have you kept them domed with clear solo cup, spraying inside of cup a couple times a day. You say this developed after changing lights. Is it possible that you have light to close.

6

@Stickyickyick am new to growing, but I agree that’s over watering. I would let that dry out for days. I don’t dome, 24 hour seed soak, straight to FFOF in a solo cup.

7

The things I pointed out was just some possible issues. I’ll tag someone that can probably zero in on problem faster than I can. @imSICKkid @Myfriendis410

8

@Bulldognuts I think that’s exactly what I’m doing! Thanks you man I appreciate it! So spray the cup and cover the seedling for how long at a time?

9

It’s a combination of over watering (tiny plant in big pot makes that so easy to do, next time try solo cups) and probably pH issues. Spring water usually has a high pH and if you’re not checking and adjusting then pH problems are sure to come up.

10

Let’s try to keep things in the same area just to keep from cluttering up the forum.

Edit; that was another OP’s thread so I brought it back… apologies for any confusion.