get some sunshine mix and start your seedlings in there if your uncertain of ur coco. or flush the coco a bunch, of ur uncertain of ur coco run 10x the amount of water as there is weight... (ie 1kg brick would get 22 gallons, 2.2 lbs x 10 gallons) and ull be good. if its
botanicare coco youll be even better. i have a bad back and knees so i use this litle trick to wash my coco. buy a 15 gallon
smart pot (cloth like pots for plants that are awesome!) and a 5kg brick of coco.... put coco in
smart pot inside the shower and let it run for about an hour or more till theres no brown colored runoff. hope this helps ya, u will have no problems transplanting from sunshine to coco provided u dont use soil amendments like guano and earthworm castings.