Critter ID please

[jfur]

Hi could someone please help me ID this critter? I have never seen them before but in the past couple of weeks have shown up all over the glass of the tank. They look different than the other copepods in my tank and move differently. They move more like snails without a shell. Are they Isopods? Anything bad?

Thanks in advance!

 

[bluemon]

Flatworms. Should be okay if you see one or two every once in a while.

If you start seeing a lot more, look into where you might have excess nutrients and see if it potentially smother out coral

 

[BillsReef10]

Flatworms , they won’t hurt anything just a nuisance to the eye at most. If you use flatworm exit I have been reading to use carbon afterwords so they don’t drop toxins into water

 

[jfur]

Thank you both!!