Blueberry

So had some problems. I took to long to raise my lights and i paid the price i flushed and 6.14 on the runoff so i think my meter is broken im also adding calmag too because from what ive been reading i should have used it sooner. You live and you learn though Some crunchy leaves but not as bad as my other plant The bud sites are doing awesome though still growing and the leaves are gaining more and more thc. She seems like shes still taking water and maturing so im not too worried. If anyone can give any advice to help me fix this it would be greatly appreciated