right so yesturday night when it was completely dark in the room i turned the rooms lights on and looked into my tank and saw 2 worms.
one was on the glass, the other was kinda swimming and going on the glass.
it wat white.
i turned the lights on to get this vid.
Try bristle worm. It's a long shot but that's what it looks like from my blurred phone screen. And looks like it gets sucked into the powerhead and propelled (making it look like it's swimming.