indoor Please help dial in my grow tent - Brazilian Malagueta Peppers

Hi everyone. Happy to be here. I have a 5x9 grow tent with 2 sets of VIPARSPECTRA P2000 Grow Lights, 3 fans, and recently added a GE ADHL 25 LD dehumidifier because a rainstorm was brewing inside my tent. This is my first venture at it. I have ~22 soil pots ranging from 8 - 12" Ø and a hydroponic nursery where they started. Now those are growing Basil. I have yet to dial in avg RH and Temp. Graphs are all over the place. I don’t think I’m using the dehumidifier effectively. I had it all week set to 75% on Smart mode but it was oscillating 60 - 91%. I had it this morning when I noticed RH hitting 95% so just now I set it to 70% on medium. It's already come down to 87%. Temp around 67 - 79 F. Lights 16:8 My leaves were curling at first due to overwatering, new growth seems to be doing well. I've been trimming new little buds up top to keep this cycle going while also trimming lower growth by the base. I’m attaching pics of my basement setup and a couple of screengrabs from my hygrometer. 1. shows what this week has been like and 2. Two-week comparison. Please let me know what I’m doing wrong or if I’m on the right path. I could use some advice. Cheers - P
 

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This looks like transpiration issues to me. I'd suggest stopping the humidification and making sure the soil dries out between watering. My peppers do perfectly fine inside during the dry of winter without adjusted humidity - though I wouldn't rule it out using it to improve conditions for certain varieties when they're flowering and setting fruit inside. Intensity of lighting can be a factor, but your intensity and distance don't sound harsh. The make-up of your soil can also be a consideration. I see lots of perlite in your containers and perlite can create root problems when there's too much in smaller pots or the grade is poor and it contains a lot of powder.

Unfortunately, in my experience plants can be slow to recover from these conditions, especially if the roots have been adversely affected. I've had occurrence of this, but I've never seen it so pervasive. When it's happened to me, sometimes the plants recover only once they've been transplanted outside.
 
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Very good feedback. Thank you @CaneDog
I’m not sure if it was a typo or not but I do not have a humidifier in there. I do have a dehumidifier. Does that change your POV?
The soil I used is Happy Frog https://foxfarm.com/product/happy-frog-potting-soil/ I read raving reviews from this particular soil.
That being said, I’m curious as to your region for plants to be able to handle winter outside. Thanks for your input. I’ll be back for sure hopefully with positive results. Cheers
 
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