tiny white starfish or spiders

[roundman]

I just found white dots on the sides of my tank. They are very small (can't get picture) some have legs. I just had ich on my copperband and did a fresh water dip last night and it appears to have helped. I have a 90 gal with copperband, 6 line, royal gramma, 2 clowns, 12 hermits, cleaner shrimp, serpent star, and emerald crab. Do I have another problem or are these ok.
Thanks for any help, new to salt water.

 

[bigarn]

if they're spiral shaped they're spirobid worms, if they have thin arms they're probably mini-brittle starfish. either way they're okay.

 

[roundman]

OK now they have changed and look like fine hair or spider web strands. They don't appear to be moving.