new growth looking leathery please help

Not sure what's going on here . Been giving them 6.5 ph water they are in happy frog soil around two weeks into flowering. Two plants showing symptoms . One plants middle finger of leaf turned upside down. A couple leaf wrinkles toward center of leaves. Not one bug in sight.

what is the ph of your soil, normally if the ph is off you can get these problems. the leaves can then start to get leathery and eventually go yellow and die. i had similar once and it was ph out. the leaf never recovered but plant showed no more symptoms after i flushed. but i would wait until someone with more experience than me lets you know if that could be the cause.
but for me its ph causing issues.
good luck with it.
lu
ps, you are giving them nutes at this stage arent u?

It's your PH... I'll bet the soil is acidic as hell.... what is your run off reading?

twisted leaf = pH off

Gotta wait a couple days before I can check runoff since I justed watered. I havnt checked runoff in awhile because I didn't notice any problems. But I guess it is time. Just put in an order for mr nice's early queen. Gonna see how well she does is a small cab.