Tiny worms?

[Cjsanders757]

I have these tiny worms on my glass in my 20 and 10 gallon tank. What could they be??

 

[George9]

Are they hard to the touch? I had a bunch in my nano tank. They're some type of harmless worm, and should taper off

 

[Cjsanders757]

Are they hard to the touch? I had a bunch in my nano tank. They're some type of harmless worm, and should taper off

Idk haven't tried to touch em