Your pictures now show some recovery from the "root shock" and that's good...
Hmm,,,,I've sat back and watched this thread awhile, guess I'll interject here.
Coco choir needs to be conditioned before use.
Coco holds between 5-8 times it's own weight in water and the fiber holds nutrients and "buffers" nutrient swings......
Coco also pH's between 5.8 and 6.4 a real good starting range.
Coco is a source of potassium, iron, manganese, zinc and copper, which it releases gradually.
Due to the above traits, like getting a nutrient "salt" build up. You need to "wash" the pot around every 2-3 weeks...
The coco being a source for a macro nutrient and micro nutrients, means care must be taken in the "feeding" of the plant to offset this fact.....That's why the BEST synthetic nutrient manufactures make a Coco specific formula....Like Hesi and Canna...
You should water only when needed and always at lights on.
Coco is a fine medium to use but I find it as to much work. That's my opinion and we all know about "opinions" (lol) so doing whats good for you is only what matters on that.
Like I said it looks like your plants are recovering, watch the salt build up and water only when needed and you'll finish out ok...
Good luck