Small white bugs/worms in aquarium sand and on glass?

[Hannah1064]

I noticed these small white bugs and little worms in my aquarium yesterday I immediately did a 50% wc and vacuumed the sand. Are these bad? Will they hurt my betta? There doesn't appear to be any on his fins/scales. He is hiding a bit more than normal but besides that is his usual self. Here's a pic I took of them, it won't let me upload video.

 

[Alejandro]

Can you get a closer picture or crop just the part with a worm as the site reduces the image and we can't zoom and look.

 

[Hannah1064]

Can you get a closer picture or crop just the part with a worm as the site reduces the image and we can't zoom and look.

Yes, does that work better? The tiny brown/white dots in the front is what I'm talking about. The brown fuzzy stuff is algae, but the dots are definitely not. They are absolutely tiny, my iPad camera can't focus on them any better than that.

Yes, does that work better? The tiny brown/white dots in the front is what I'm talking about. The brown fuzzy stuff is algae, but the dots are definitely not. They are absolutely tiny, my iPad camera can't focus on them any better than that.

They're about the size of a grain of salt and are definitely moving/crawling all around

 

[Alejandro]

Hard to see - look up pictures of planeria and see if it looks right.

 

[Hannah1064]

Hard to see - look up pictures of planeria and see if it looks right.

From what I can tell, the worms are a longer and thinner than planeria and the dots are rounder.

 

[Alejandro]

You may need better photos - but if they are flat and sliding along the glass and rocks there's a good chance they are planerians