Why are the leaves ruffling on P.G 1?

It's a little bit to warm and 24/0 light is to much, I know they say autos can grow 24/0 but they really do need a rest period, 18/6 is optimal and 20/4 is just about tolerable. I'd cut 4 to 6 hours off your light schedule and see how they respond after a few days.

Because you are messing them by growing at 24/0..............18/6 is optimal! ALL cannabis plants, autos included, NEED "sleep"! Without "sleep", a cannabis plant will have a messed up metabolism and a plant with a messed up metabolism will never reach its full potential or have peak health. There are certain metabolic processes that a plant can only do during lights out, without lights out.........you are messing them up. It is a complete MYTH that it is ok to grow any cannabis plants at any stage of their life at 24/0!

No real damage. Just keep an eye on humidity and keep lights not too close for now.

Yeah my guess is vps being off. The humidity was really low where I live today but the weather was in the mid 70s I had my window open today it felt great out but I checked the plants right b4 lights out and they looked a little stressed Maybe your experiencing the same thing my plants are about the same size as your plants right now Also they will grow out of it by the time the grow about 6inchs they will not be so sen

its just a phase, all plants go though it in their teenage years, she'll grow out of it. Emo vs Ruffles all the same.

Heat/humidity (environment) Below Soil - a number of factors. Your not in trouble if you research a fix. https://heyabby.com/blogs/articles/cannabis-leaves-curling-up-or-down?srsltid=AfmBOoolVsJ3qL9dPTIhSzNXPtosHYJDsCF4-wsyGpeg3hZGl-aEjSWk

Climate (too dry or hot) or too much wind tends to do that. the paling on old leaf is likely variegation or some sort of less than idea fertilization early on that is no longer an issue, but that plant also looks a bit too lush up top (newer growth). So, keep an eye on that. Since the others seem to be thriving could be an oddball, but most plants *can thrive off a single formula. Too often peopel would rather blame the plant rather than some esoteric imbalanced formula they have faith in. if it's only 1/20 or similarly rare, you can blame some genetic oddity more confidently. Otherwise, keep tweaking that formula until most things thrive on it. If in soil, sometimes the inconsistency of it can make it more difficult. I guess 1/20 type rarity should be reserved for soilless/hydro contexts. you have to be a little more on your toes in soil with more unknowns in regard to nutrients provided.

hey growmie, looks like a bit of early rootzone stress on , nothing crazy yet. probably a combo of heavy wet pot + light pressure a little too strong for where the roots are at right now. you can usually spot it when the new growth comes out ruffled or edges curl upwards slightly. i’d let the pot dry out a bit deeper between waterings and maybe dim the light 10–20% just until roots dig in better. should smooth itself out over the next week if you dial it in. good luck, you’re still early enough to course correct easy.🤞🍀♥️