I have a 4-5" disc retic that I brought home a few weeks ago. I found one lice on him which I removed by hand. But then they EXPLODED. He is infested! And seems to be wasting away even though I'm feeding him twice or more a day, and doing regular water changes. I've ordered some Dimilin online after having trouble finding it in Canada, but I'm not sure if there's anything I can do I the mean time. Removing them by hand doesn't seem on option anymore as there is a lot of them.