Are my plants fucked

Seems to be a multitude of deficiencies, dark purple stems and deformed growth. I took 4 clones put them in coco under a 300w cfl and things went downhill quickly. They'e being fed canna nutes. Ec 1.0 ph 5.8. It got really hot where I didn' have any extraction but that's been rectified. How do I get these back on track? Thanks.

I'm thinking it might be the coco. Was the stuff you used pre-flushed and ready to use?

I tried coco over 15 years ago and my plants didn't like it but I'm pretty sure it needed flushing to remove all the salt and I didn't know to do that at the time. Can't get it around here but ProMix is everywhere so I've been using that for a decade. The ProMix HP is good right out of the bale with lots of perlite already mixed in.

Totally........

This is due to over watering, nothing more. That sickly color is only going to get worse...if you know what you're looking for, you can reverse it early on before it gets to a certain point, but I think you've passed that point. Switch to soil growing.