Marine Velvet?

Ok so 2 out of my 3 fish dont look so good. I have had a potter angel for almost 3 weeks now and I am still yet to get him to eat. he does pick off the rocks occasionally. I also have a sailfin tang who ive only had for about a week. They both have very tiny white spots all over them and are scraping against the rocks. They are also swimming irrationally darting across my tank. The potter angel started floating on his side and was breathing heavily. He might be to far gone :/. What should I do to atleast save my sailfin? My quarantine tank is only a 5 gallon... Also what do i do with my clown who seems healthy?
P.S. Water parameters are all fine, have about 20 snails and 4 crabs no coral. but plan on it later.

 

sounds like ich..pic maybe? perhaps a freshwater dip is in order. They may have some parasites in their gills, a freshwater dip should hopefully help get that out of there. The clowns sometimes need to be treated differently depending on what they have but in this case a freshwater dip should work for them as well. I picked up some formalin in case anything happens to mine. Haven't opened it yet though.

I would check all of your system parameters to see if perhaps your system is stressing the fish and making them more susceptible.

 

Im not convinced its ick i looked at pictures and am leaning more towards marine velvet. Anyone else?

 

need a picture to really help you out.

 

Sorry my cameras not the best. This guy wont stop swimming around so its hard to get pics. I also bought kordons ich attack and kordon formalin 3. Are any of you familiar with either of these products? the formalin 3 supposedly treats both ich and velvet but don't know if i want to put in in my display tank. Does any one know if it is reef safe? it doesn't say on the bottle... Should i use both together?
Thanks!

 

does it look like a "sheen" coating the fish, or more like salt/sugar grains?

 

Id say 100's of little salt grains. sheen? Its not glossy if that what you mean.

 

Usually velevet is impossible to see individually, but it kind of creates a velvety color sheen on the fish's skin. It does sound like crypt to me. Either way, the treatment is the same, but velevet is almost always fatal.

 

Well if impossible to see its def not velvet then...
Just bought this little guy to help out with stress. I know he cant clean ich off him but i figured it cant hurt to get the other parasites off that might be bugging him. He has been in the tank for litterally 5 minutes and they are already working together haha.

 

It's crypt. I can see it in the last photo.