It's definitely not N toxicity. The plants are way too light green for that.
The "wrinkles" you have on the leaves are a sure sign of over watering.
Leave your nutrients where they are. Don't water anymore until your pots are completely dry from now on.
The 4'x4' looks like a Cloudlab replica and claims to have the 23mm poles along with 2 side doors like AC Infinity should have made.
I might just have to order one for $99.
https://www.amazon.com/dp/B09GW812DJ/ref=cm_sw_r_cp_api_glt_fabc_E6X57TB0X9KCJ315XT64?th=1&psc=1
I keep seeing people say you want 3500k spectrum from leds. Well, I never see 3500k diodes. Mostly 3k,5k or 6.5k, so how exactly do you figure this out?
Is a light with 3k and 5k considered 4k?
I'm confused..
I've been messing around with things and it looks like I can manage around 55RH and 81f when running the lights @ 100% and the fan turned down.
I ordered a Cloudline T6 a few hours ago, so hopefully the controller can keep everything in range.