hey brothaman,for some reason i cant c the pics ,o wait i c them now...okat bro from my experience with that issue of the serrated edges curling up was always 1 of 2 things....First,was Heat Burn...if my temps were good and wind not crazy on the girls ,then it was usually a pottasium issue,lack of...being that Potassium fights for nutrient uptake a little with other nutrients u might wanna feed a little extra potassium such as kelp foliar,seaweed foliar,etc....did u add any amendments to ur coco?? such as bone meal,or fish meal,or phosphorous??i found tht using Bioag Fulvic in Foliar with seaweed really gets my girls back on track....
now the irony of all this is that after i put the transplanted clones in the cob veg room tht alot of mines did the exact same thing,which leads me to believe they may have a connection to COBS..now tht my feedings are more up to par with how im noticing girls under COBS like more food and drink faster,im noticing tht they are adjusting and only a few have these and new growth is coming along healthy without it...so maybe brother u should try the foliar route and cut back a little on the cal/mag for a feeding or two and see how they recover from a foliar...i use teas alot and beneficials and tht kinda solves alot of issues too...example ...Orca,Recharge,Hydoguard,Great White,OG BioWar Root Pack,,,......
try a tea or foliar mix i described and c if tht helps...u will get a great looking harvest from the pis..will weight or yield be up to ur standard or goal ,well thts Subjective to Your Own criteria for what u were tryna acheive...But no doubt will your grows get better and better and better...we get hiccups,we drink water and keep on pushing,,,one thing about this plant ,this girl is if u give her your heart she will no doubt show u hers
keep me posted ,im very interested in how this works out for u and staying up to date with how its looking...for now stay green my friend,,,,and Peace and Love