Please ID this things

[moose312]

sorry if this is not the right sub forum for this. i recently had this outbreak on my LPS, clams are not affected though params are normal.

while removing some zoa's with pesky blue cloves i actually saw this "blue things" moving.. i can manually remove them just by touching them using a ziptie

this has been going on for a month or two now but only recently that i noticed that it moves and that i can remove them.. they are actually a brown tissue with blue rings on them. my frogspawn is actually greener underneath this things.

 

[Art13]

Possibly flatworms? other way i don't think they are good, might need to dip them and maybe treat the tank, i haven't had an issue with any type of flatworms so my opinion is a guess at best. Do you have any wrasse in the tank?

 

[MechEng99]

They're flatworms...a *really* bad infestation at that. Salifert Flatworm Exit works well, but you'll need multiple treatments. You'll also need to manually remove as many as possible with a siphon before you treat as those flatworms will release a lot of toxin into the water when they die. (Make sure to have plenty of carbon on hand for after treatment).