Metronidazole and Kanaplex by Seachem and it would take care of the problem weather it was ich or something else. I did this yesterday afternoon and my starfish died last night. Did this kill him?
More than likely Yes.. With SW
tanks Inverts such as your star and your snails do not like Meds at all.. In SW
tanks the more popular method would be to QT
your fish and treat in a seperate tank... I am not familiar with the meds that you used however It is pretty safe to say that the meds did in fact kill the star.. Sorry for the loss BTW
.. As for what to do now with the Clowns I am kinda at a loss. Depending on the meds if they are copper based then the ods of you being able to keep anything else but fish in the tank are pretty much out of the question.. I will let others that are familiar with the meds help you out with that..