Hello all! Any ideas what these little guys are? They are very tiny, smaller than a grain of sand. And are currently all over everything in my tank, but mainly on/in the sand bed. I am very curious to see if any of you know what they might be. They are small, red/purplish and have worm-like movement. I have attached a video showing them moving around. For context, these guys have just popped up in my 7 gallon nano from seemingly nowhere during a “dirty” dinoflagellate cleanse with a blackout and copepods. They popped up about 2-3 days in to the blackout. Thanks!
![C4BA1BAE-06BB-4EB0-A298-0DE5BEDB1A7D.jpeg C4BA1BAE-06BB-4EB0-A298-0DE5BEDB1A7D.jpeg](https://test.reef2reef.com/data/attachments/2753/2753831-19695c3ba5098b05625793ca144119b5.jpg)
![64CE62E9-6467-4E3C-95F6-4930C39A32B7.jpeg 64CE62E9-6467-4E3C-95F6-4930C39A32B7.jpeg](https://test.reef2reef.com/data/attachments/2753/2753830-16e7fb64960a55747f3f00d879cf9c2d.jpg)
![C4BA1BAE-06BB-4EB0-A298-0DE5BEDB1A7D.jpeg C4BA1BAE-06BB-4EB0-A298-0DE5BEDB1A7D.jpeg](https://test.reef2reef.com/data/attachments/2753/2753831-19695c3ba5098b05625793ca144119b5.jpg)