i don't know what you're going to do with it, if you're going to put it into soil or a soilless blend like coco or promix, you can leave it in the rooter, if you're going to go hydro with it, you'll have to carefully cut it loose then wash the roots as clean as you can.
if you go with soil or a blend, make sure to use a good amount of perlite so you have good drainage.
a lot of people veg all the way through on 24/0, but i don't like it, i actually use 18/6, but 20/4 would still be better than 24/0 imo