Flatworms in clownfish breeder tank

[alex77619]

Hi so this seems to me are the harmless type flatworms. The are currently at a bloom in my clownfish fry tank. Is there any way to knock them out? This tank is full of isopod rotifer copepod and these flatworms.
Is there anything that only kills flatworms but not the pods. Or should I just let die out after they ran out of food

 

[reef lover]

You can let them die off once the foods gone as stated or just siphon them out into a filter sock so you can remove just them no pods and no water loss.