Treatment for Cryptocarryon irritans and Amyloodinium occelatum:
1) Remove the fish to a quarantine/hospital tank
2) Add copper sulfate at a level of .15 - .20
ppm, maintain the level for 3 weeks, even if the fish appears to be better in a few days
3) In extreme cases, F/W dips (5-10 minutes) or formalin baths may be necessary to save the fish
4) Do not return the fish to the display tank until it has been parasite free for 3 weeks
A reliable copper test kit is required to maintain the proper copper level
Copper sulfate precipitates out of solution, fairly easily, additions will be necessary everyday or every other day
If you use a form of chealated copper, a chealated copper test kit will be required
There are many other forms of treatment for ick or velvet these days. I have had success and failure with some of them. Copper is the only treatment that has been consistently effective, in my experience. Copper is the treatment I recommend, copper sulfate in particular, because it seems to work a little bit quicker.
Other methods Ive tried with limited success and some failure:
1) Stop parasites (pepper solution, advertised reef safe)
2) Formalin (tank treatment and baths)
3) No Ick (increases slime coat production, advertised reef safe)
4) F/W dips
5) Hypo salinity (lowering the specific gravity below 1.015 for an extended period of time)