I have a 30 gal saltwater tank that i have had for about 2 1/2 months. i now have 4 damsels, lawnmower, crab. I had purchased a Anemone and a lobster about 4 days ago. the lobster died in 2 days and then the next day my parot fish died also. i've had my parot fish for about a month. now i am seeing what appears to be ich on my fish. if anyone knows how to or cangive me any advice on how to get rid of this i would be thankful. i do not want to lose my fish. i use to have many freswater tanks in the past and i know there was a medicine you could add and it would go away. is it the same ? or what do i do? thank you for and help you can give me.