When are aeroponic clones ready?

How do you know when an aeroponic clone is ready to be transplanted? Better yet does anyone have a picture of a aeroponic clone thats ready?

once you start to see some nice roots growing out of the stem, its ready to go.. some people like fewer roots, some more.. its your clone, you can transplant it when your ready to..

I like to wait until I have many roots that are roughly 5-8" long
this ensures that even if I do manhandle a few of them, it is pretty
much guaranteed to still root properly.

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