If anyone ends up with these things in their tank this stuff works magic. I dosed the recommended amount (1mg/gallon) around noon yesterday. They're almost completely gone today! Once the lights are on max I'll get a picture. Got it on Amazon...Thomas Laboratories Fish Bendazole Fenbendazole Powder, 250mg. It comes with a bunch of 250 mg packets I only had to use half a packet so I've got plenty extra if anyone needs some.