Confused what these are

[Nickster135]

They are in large numbers on my powerhead and on my glass. Some kind of flatworm? could they be aefw? Recenetly had a milli rtn but dipped and nothing came off.

 

[twilliard]

yes that is flatworm. I call them the common brown flatworm.
FWE is effective when dosed more than the recommended
These guys build up a tolerance to FWE
Also these guys are not harmful to coral directly

 

[Nickster135]

That

yes that is flatworm. I call them the common brown flatworm.
FWE is effective when dosed more than the recommended
These guys build up a tolerance to FWE
Also these guys are not harmful to coral directly

Thanks for the fast reply. Looking up pictures, it's exactly what they are!

 

[recess62]

My six line wrasse loves these

 

[Roboson]

They come and go in waves. I used to have a million on my back wall. I think they eat copepods. I always seem to either have a ton of copepods or a ton of these guys.