Clones in Coco

I was told on another site to always use nutes when watering in canna coco. I have been told to use only plain water for clones first 10 days . should I not use coco and maybe just perlite for the frist 2 weeks then transplant to coco ?

stick with coco and use half strength nutes for 1st 10 days but only water every 2-3 days

all my rooted clones have been doing shitty the bottom part of the clone looks brown & half dead and the top has curved leaf that feels almost crunchy and a few are yellowing it sucks man just now getting some new growth after almost 2 weeks

sounds like they are overwatered