Bugs insidemy astrophytum seedlings tray

[reyglez1991]

I found my tray of Astrophytum seedlings full of bugs/insects (?) You can barely see them in the photo, and I only marked the ones that were more visible in the pic, they're really small and are walking all over the soil and seedlings. I'm assuming the tray is not 100% sealed if it got pests inside. What can I do about it? I'm afraid the bugs might kill the seedlings. Should I repot them to new soil? They're only about two months old. Thanks in advance

[teo]

If they move/jump they are probably just springtails - in that case they are (fairly) harmless