from what ive read, on posts on swf, its not as bad as regular white ich and you can treat it the same way. i think it can turn into the white ich if untreated. you can try doing it by rapid hyposalinity, which i think will cure it quickly, or you can try medicating the fish which can take 3 weeks plus. i medicated the fish. first i qt'ed the 2 clowns in a regular 10 gallon. i put 5 gallons of tank water in with the fish, and 5 gallons of fresh saltwater, with the specific gravity lowered. the overall specific gravity was 1.019 (22ppt), and i raised the overall temperature in the tank to about 86-87 degrees. lfs guy said thats what to do, so i did it. ive never treated ich before so i took his advice, and i didnt want to do the hypo cause i was afraid of killing the fish. anyway, the only thing i had in the tank with the fish was a big rock to give the fish a place to hide so they wouldnt get so streesed out. i set up my emperor 330, with no filter pad, carbon, or biowheel, just for flow, and a heater. medicated the fish every 3 days, hardly fed them anything (cause i didnt have any filtration and didnt want my ammonia to get too high)did regular top offs with fresh water, and today, three weeks later, i put them back into my dt.
no more black spots!