What have I done!? 😭 Seedling Update, Week 2

A quick update on how the seedlings are doing since starting this project. So far it's been less a test about light and more a lesson on growing.
It’s been a couple weeks since we last looked at the seedlings. Let’s see if they’re still alive!
2 weeks ago we moved our seedlings to individual pots and placed 6 under a HLG65 5000k 6 under an HLG 4000k 6 under two HOt5 6400K. Each shelf is relatively enclosed and each was sitting on its own heat mat.
I’ve noticed some problems right away.
1. The top two shelves the plants were looking more yellow
2. They had some signs of fungal disease on the leaves
3. There is curling on the edges of the leaves
Compare these plants with the ones on the bottom rack. And you’ll see less fungal issues and although not as dense growth there are greener leaves and less stressed looking plants.
Now because all these plants are on the same feed program I’ve narrowed it down to a couple things. These are neither the fault of the nutrients or the lights. They are grower error.
The plants on the upper two racks were getting too hot and too humid. This caused fungal issues and stressed out these plants. Heat would rise from the lower racks making it much hotter at the upper leaves. Combine hot and humid with brighter lights and you’re just asking for you plants to be stressed.
I removed the humidity domes off the plants, sprayed them with a light sulfur spray to help with the fungal issues. I turned off the heat mats and added a small fan for circulation.
I’m hoping these plants aren’t beyond repair, but I wouldn’t be surprised if we see some casualties.
If you guys have any suggestions if there’s anything else I can do for these plants let me know in the comments below.
Thanks for watching

[@sciencesaves]

Hi there, what was the final verdict between the lights once you dealt with the issues? Were the results distinguishable between the color temperatures(Kelvin)? Thanks :)

[@jordannovek2911]

I think your led is too close. I think that maybe why their stressed. I grow with led too ( Fluence Bio... and Area 51 ) and in veg they are about 30 or so inches above the canapy. Also plants grown with led tend to use less water and more magnesium because there is more photosynthesis happening. Just my 2 cents. Cheers!!

[@HowToHydroponics]

Thanks Jordan. I just got a PAR meter so I’m hoping to see if they’re too close. I was also wondering if the yellowing was because they weren’t getting enough of something. It’s been a few days and I increased the feed and the plants are looking a little greener under the LED. I’ll add the supplements that you suggested and hope for a Recovery.

[@pragma2017]

👍🏼👍🏼

[@HEWfunkingKNEWit]

😆 glad you figured it out. Humidity domes are efficient at germination stage and for cuttings. The more foliage there is the more airated the dome needs to be because of higher humidity. Also overwatering can cause these issues especially indoors. Water the the soil thoroughly, then allow the soil to dry out slightly( never completely dry) before next watering. Have you got a fan in your grow tent?

[@HowToHydroponics]

Yes overwatering was probably also an issue here also. Thanks for the input! I have No fan in the grow tent yet. But rest assured when I have the plants in there I’ll add one.

[@thetech207]

Over watering...

[@HowToHydroponics]

thetech207 yes I think you’re right.

[@gillenzfluff8380]

Every time I grow okra they drop leaves and look yellow they don't like over watering.