A priming question!

[hereistay]

Hi!
I bottled my cider about a week ago and made a priming with 6g/liter of sugar.
I'm not expert so I'm asking if I should observe something in the bottles that shows that the fermentation started again...
Don't know, should I see bubbles or nothing at all?
Fermentation will be anonymous?

 

[Maylar]

Normally we use a plastic soda bottle as a test indicator, but if it's already bottled just open one after a couple weeks.
Anonymous, yes.