I noticed these before in my pot of some drosera seedlings and I didn't think it was a big deal, but there's more than before and I'm a bit worried. They're small, the biggest being probably about 1mm long. They hop too, and when I blow on the soil they crawl around. I don't think they're worms because I don't know of a worm that hops. Most are a light brown color, but a few of the big ones were darker, like black and gray. The soil is a mix of 50:50 peat and perlite, but on the top is a small layer of peat, which I thought might be good to help the seedlings for some reason. Are these some kind of harmful pests? If they are, how do I get rid of them? I have a ping right next to it, they're sharing a water tray, and I don't see any of them in that pot. Here's some pics.
This is one of the larger ones that is light brown.
And this one is the black and gray one I saw.