Hi, can't say much about coco. But I see you use jiffies?? Correct? I stopped using it, because both, peat and coco jiffies were way too sour. I measured the run off and had PH 4 on the peat jiffies and PH 4,8 at the coco jiffies.
I had some losses in the past, thats why I checked them.
Hope to help, good luck with your grow✌️