Flat worm of some kind I need help identifying

[Streetdoc77]

These suckers have showed up in my refugium there multiplying like crazy so far isolated to the refugium and not the main tank yet ? my acros in The main tank looks fine so far ..... should I be in crisis mode ???

 

[TankYou]

Do they crawl around very slowly or are they capable of decent movement?

 

[Streetdoc77]

There moving pretty good .

 

[Streetdoc77]

Due to my extensive quarantine process with the corals and that they are isolated so far to the fuge , I speculate that they came in with the caulurpa....

 

[KJ]

Due to my extensive quarantine process with the corals and that they are isolated so far to the fuge , I speculate that they came in with the caulurpa....

Google Elisia sp.

 

[Streetdoc77]

Google Elisia sp.

A form of gastropod , man these things are so small I can't get a super good look at them .. There multiplying like crazy !