What is this ?!!

[jacob97]

These showed up awhile back and I thought they were feather dusters. Now they are straighting out and I've never seen the flat things

 

[littlefoxx]

These showed up awhile back and I thought they were feather dusters. Now they are straighting out and I've never seen the flat things

Those look like chitons to me. Are they hard?

 

[jacob97]

Yeah , they're like stone on glass . It's crazy

 

[littlefoxx]

Yeah , they're like stone on glass . It's crazy

Chitons! They are good. I found some in my tank a month ago and tried to pull it off the glass and barley got it off with tongs! They are strange but they seem to keep my glass clean whenever I see them on there