Hi all I have all softies in my 4x4x3 tank with some large tangs, the problem is that my white medusa is covered in flatworms. Not knowing which type they are but they are small round and brownish red colour about 3mm across. I have done a fresh water dip a couple of times but they have still come back. I was told that a Leopard Wrasse would eat them so i bought one about 3 weeks ago and not noticed any change in fact there seems to be more. Does anyone know what will eradicate these pests as they are making the medusa shrink back to nothing, also i have a Manderin in the tank which i have had for about 4 years. Hope you can help as i dont seem to be able to shift them. Many thanks Eric