Sprouting seeds in a clear cup slipped inside an opaque one lets you lift it out and check root development without disturbing anything, which is the easiest way to learn what a healthy indica taproot looks like. Roots dislike light, so the outer cup has to stay on except for a look. Photos of root progress from day three to day fourteen in clear cups are posted on https://kushindicaseeds.com, and they make transplant timing obvious. Once white roots reach the bottom and start circling it is time to move.
