Another tips curling question

Just read the really excellent post about this, but still hoping for some feedback. Plants are @25 days old, ffof. I have not started adding any additional fertilizer, just water. I have four plants going, two types, though they all show very different characteristics. This one is a Skywalker OG auto. Serious leaf curling. The other Skywalker shows some down turning but to a much lesser degree. The two Runtz autos seem fine so far.

Would love some informed feedback/suggestions. My best guesses: nutrient toxicity from the ffof (also has perlite at @1 to 5 ratio). Too much light? (Just turned my ac infinity s33 up to 6, had been running at five, @20”); over watering would be logical, but I’ve been pretty cautious. They did not get water for almost five days and the pots were light (gave water last night - pots were light and dry - problem worsened). Thanks for any help. Noob question, I know.

What are your temps and RH like?

RH is around 63% right now. Temps range from @ 60f with lights out to mid 70s most of the time. Heat is a little bit if an issue, but the range is generally 68-74 with lights on.

Nitro “ curl “ - not a big deal as long as you don’t dump MORE nutes on top.

Fox Farm is heavily nute charged as is - some plants can show excess symptoms while growing in it.

My 2¢ ….

Water it as needed only. Let plant acclimate and burn thru soil strength. Plant will eventually exhaust enough of it as it grows.