Hey, how is things? I see you're growing in coco. And your plant is somewhat droopy. This will be your PH. It's too high. 5.5-6 ph is a more suited for coco. 5.8 been optimal. I had the same problem with 1 of my girls. Ztrawberry and gave her a ph'ed water of 5.5 and the next day she was standing up. I know you're not far off. But, even a slight dif in PH even by .2 or whatever can make all the dif. They look healthy. If you don't have a Ph - a small drop of lemon juice 0.01ml/l will drop it by a lot. And won't cause any harm. Even if you leave the nutes ph alone and just follow up with PH'ed water, it'll make all the dif. Hope you don't mind me saying.. Good luck pal