Seedlings in shock

Hello, I have been experimenting with old seeds and i did multiple rookie mistakes while taking care of them.
These seedlings has been exposed to,
- hot (35+ Celsius) - now under control, its between 24 to 28.5,
- light(2x400w hps), now just using a 400w
- maybe underwatering (in fear of overwatering).
- an otc turf as medium ( heard that might be an issue so i just got a biobizz mix)
- AN sensi grow as fertilizer

They are 5 weeks old and one of them is an auto.
They stopped growing for a while and now slowly growing but new growth seems to be not normal.
What should i do? Any advice will be highly appreciated.

You definitely stunted, stressed them out. I'd just wait till some more growth comes in. Also wouldn't be feeding them much at this stage...may also be a lockout too...mutated new growth isn't good when the older growth was normal. Good luck. And don't over think it man ..it's a weed. Shit grows in sidewalks if you let it. Just let the plant grow.

Thank you for your response and advice. It came as the remedy i was looking for my anxiety

Still somewhat of a beginner myself, but IMO id personally get some new beans and chalk it up as a learning lesson. I have a buddy that always tries to nurture some bad looking plants and it always ends up bad even with "new growth". For the time and money im spending on this shit, I want my girls to be healthy AF lol. Your medium looks kind of bleh as well, might want to consider better soil. Just my 2 cents, good luck!