Please help ID

[gabygaby90]

Can anyone help me identify this? I tried to catch it, and I started swimming away like an anemone. I have a history of hydrates in my tank, but I got a file fish, and he seemed to have fixed the situation. I had to get rid of him because he was starting to eat my corals due to lack of hydroids.
This one was dime sized, which is significantly bigger than the usual hydroids I’ve seen on the glass.
it doesn’t look like an aptasia & I dip everything that goes into the tank with Dip X Coral Dip

 

[JGT]

Looks like your hydroids are back.

 

[vetteguy53081]

Can anyone help me identify this? I tried to catch it, and I started swimming away like an anemone. I have a history of hydrates in my tank, but I got a file fish, and he seemed to have fixed the situation. I had to get rid of him because he was starting to eat my corals due to lack of hydroids.
This one was dime sized, which is significantly bigger than the usual hydroids I’ve seen on the glass.
it doesn’t look like an aptasia & I dip everything that goes into the tank with Dip X Coral Dip

Agree hydroid - Scrape off with edge of old credit card into net and discard