Is my Super Soil mix killing my plants or is it something else?

So this was the soil mix I used... it sat for almost 60 days before being used.

https://www.rollitup.org/subcools-old-school-organics/426849-my-first-mix.html

I went a way for a week last week and come back to this problem. The plants were in a bit worse shape. I've cleared out most of the burnt foliage. I thought it was because I had the light too close but its been close for almost 4 weeks now. Doesn't make sense it would be a heat problem but I raised it a bit anyway.

It might have gotten up to 90 degrees while I was gone. Figures Oregon summer would show up when I was gone and couldn't keep my eyes on the room temps.

Things were flourishing just a few weeks ago as you can see in my grow journal in the link below. When I left a week ago my plants looked just like my latest video.
https://www.rollitup.org/members/norcaltransplant-298416.html

Temps while I have been here have been no more than 84 for any extended period of time and no lower than 69. Humidity has been around 40-60%. I have only been watering every 7-10 days.

Please check out my pictures below and let me know what you think. Was it my light? Is the mix too hot? Is there a humidity problem? (odd curling up of the leaves in some of the pictures). Overall I think the garden looks OK right now but I am worried this problem is going to continue and will have no choice but to ride it out. +Rep for any help given. Thanks a ton!

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Most of that looks like over feeding to me. Plus the leaves look like they are sensitive to something you are doing. Could be the heat or could be misting maybe?

The leaf roll can be normal for seedlings which can be heat senstive in their earlier stages, but when clones do that it is almost always heat stress.

The other time leaves roll like that is over feeding/salt buildup. Right before the leaf tips and edges burn they can roll up like that.

Then you have the combination issue of both heat stress and over nutrient/PPMs, clipping the damaged leaves, all lead to plant shock which then can end up being root shock which then can lead on to nutrient uptake lockout - then deficiencies.

Run the burnt plants on water for one or two waterings and see if they fix themselves. In fact the next time you water them, flush them through in a bathtub or outside and let all the water run to waste thus getting rid of any built up salts...including washing out the pot footer trays which can sometimes be loaded with salt crystals.

Sorry I don't have time to look through every one's grow journal for free
Have you fed'em anything other than your dirt? If you haven't YES your dirt
is too hot! The browning of the edges and tips with the up ward canoeing of
the leave fingers is classic nute burn! You can look at my grow journal I have
some of it too!