Help with sick Kole Tang

Was wondering if anyone here could help me out with correctly identifying and treating my sick Kole Tang. About a week ago he started looking pale, saw his fins weren't looking right. Figured I would wait it out as I thought he may have just been stressed. Today he has what appears to be mucus coming off him. From reading on the internet it may be Crypto? What do you guys think? Also what should I treat him with? Do a methylene blue freshwater dip? I do have a 20l I will be setting up after work and putting him in. I also have picked up a bottle of Mardel Quick Cure. Any help is greatly appreciated!
Thanks!

 

Well he didn't make it through the night. Live and learn I suppose.

 

Ended up pulling the three other fish in the tank and did a freshwater dip as the good folks down at Aquatics and Exotics suggested. I did put in a little Quick Cure this time around just for safe measures. I'll then transfer them to another fresh 20L and keep doing that for a few weeks until th life cycle is over. My Flame Angel isn't happy but the Clowns seem just fine

 

Hello
Thank you, I'll have to remember that for next time. I spent a good deal of time looking stuff up on the internet and as with most things overwhelmed myself with everything out there.

 

Well I lost my Flame Angle sometime last night/this AM. I noticed his fins looked like they were being nipped at last night and thought it was maybe just the Clowns getting at him. When I found him today his fins appeared to have disappeared more. Weird since none of the other fish seem to have this issue, fin rot, one clown is getting worse now. I just did another freshwater dip with Quick Cure. I'll swap them to a fresh 20L tomorrow. I've kept fish, fresh and salt, for probably 20 years and have never had to battle anything more then the occasional ich. Pretty frustrating.

 

After more research and checking out reef2reef I believe I may have flukes, the Flame Angel had what appeared to be fine rot. I'll start treating for that.

 

Hello
I have been trying to treat all the fish with no luck. Just transferred the last remaining fish to a fresh 20L after a 10min freshwater dip with Seachem Focus and tried to mix Seachem Neoplex in with some frozen food to help treat an internal infection as well. This has been a battle for sure.

 

Not really, I did treat the last remaining clown with both the seachem meds listed above and by the next day all the white spots he had were gone and he is doing fine now, still in isolation. Id say they had an internal parasite possibly.

Keeping the main tank empty for about six weeks or I will drain it and start over. In the main tank my clean up crew, snails, crabs and coral banded seem to be doing fine, so that kinda stumps me even more. My pod population seems to be exploding as well without fish in the tank!