So, what do you think about the twisted and curled...

You might want to check your room temperature... 30C is about as warm as you can go before you start to see heat stress. Ideal temp is 27C for most varieties. Also, I think you want to start to lower your humidity to closer to 40% at this point, don't you?

Personally I'm more inclined to think it's a pheno that pops up every now and again I've got a mate who only grows white widow and he's had 3 seperate phenos from the same company and that leaf trait is one of them.. and it's definately the plant as the other two phenos are on exact same feeding and enviroment. Plus I've also experienced this phenomenon in my outdoor plants sometimes you just get a freak. There are all sorts of mutations that take place when it comes to cannabis and plants in general but as for the discolouration and burnes tips that's either from nutrient burn or heat stress.

Leaves that are curving/hooking can be calcium deficiency coupled with possible pH fluctuations causing the spotting on top of it. Calcium may be getting locked out.

@amazongrow I think its neither and more than likely ph related

Looks a lot to me like variegation, a genetic mutation which looks cool and is completely harmelss to the plant. Will not decrease yield in my comparison tests intra strain. Symptoms are twisting leaves and color irregularities in half leaf patterns across the length of the plant.

Two-toned leaves usually have split coloring in a relatively straight line. This mutation often affects just one or two leaves on the whole plant, though sometimes you’ll get a whole stem or part of the plant that displays this characteristic. The two-toned leaves don’t seem to have much effect on anything, but it’s kinda cool looking! I am seeing a calcium deficiency that is those brown spots on leaves. If grow medium is acidic (below 6.2 pH, Calcium can get locked out even if the Calcium is physically there). In hydro, calcium is best absorbed by the roots in the 6.2 – 6.5 pH range (in hydro, it’s generally recommended to keep the pH between 5.5 – 6.5, but calcium specifically tends to be best absorbed above 6.2)

I got some odd growth in my green crack grow, check it out, I hope its nothing serious. But looking at Google images it doesn't look like you have tmv.... Maybe some call mag issue? Or nutrient /light burn on the leaves?

Hey thanks for bringing it up... it is super interesting to me. 🤗 you have seen mine and I've seen yours... let's see what people say?? Thanks brother and Good Luck Always 👊😎