little red worms in my sand

[Fishward]

Hey guys, super noob strikes again!
did some evening watching of my tank tonight (cycling with some seed sand and LR) and saw a bunch of little red worms in my sand up against the glass. maybe about an inch long and very thin... what are they? good? bad? did i get some "hitch hikers" as everyone calls them? They're super quick too.. cast a shadow with my flashlight and one scurried away in a real hurry....


trying to learn as much as possible....