high ph

Hi All, Around day 65 and I've run into issues with my setup... Both are the same strain (GCS Tangerine Dream), popped on the same day... Medium is "RootFarm" (a soilless mainly coco mix) with about 30% added perlite. AN PH Perfect 3-Part nutes AN Calmag 2ml/l Day 74/Nite 70 40-45% RH Light...

Hi Guys, heres a pic of an auto white widow; shes not happy. I don't think its heat stress because there are other strains in exact same mix at exact same distance from light/heat and they are ok. I didn't quite get my mix right; was a tad heavy handed with lime and so my soil ph is around 7...