[chandigz]

Our local fish store had a bad case of them in thier coral tank and they added a couple of mandarins. They went to work right away slurping them up. The flat worms are now under control (though not completely erdicated but you can hardly find one) and they have the fattest mandarins you have ever seen. They also had good luck with the blue velvet nudibranchs(flatworm eating nudibranch) in their display tank(again not completely gone but under control. I think the best bet to completely get rid of them is to get them under control with natural preditors then treat with flatworm exit or levemisol to completely eradicate them.