Velvet treatment?

[Apache]

Hi all, (I also posted this in Fish Emergencies)

To my dismay, I noticed that my beautiful boyfin Ferdinand has velvet (at least I think that's what it is, I've never seen it before, but he has a grayish patch on his head, and what looks like gold dust on his ventral fins). I feel like a horrible fish mommy! I try to do everything right, weekly 95% WC (is that too much?), varied diet... *sigh*

Anyway, I want to make sure I'm treating the velvet correctly, so it will go away! Ferdie is a Betta, BTW. He lives in a 2.5 gal tank with heater (stays at about 74F). I have added 2 teaspoons of aquarium salt, and IchX (according to the instructions, it broke down to about 1/4 teaspoon for the whole tank). I know I should do a 1/3 WC before adding more meds and salt tomorrow, and I'm trying to keep the tank as dark as possible...
Am I doing this all correctly? How long should I medicate for? Thanks!

 

[WILDER]

The greyish patch on the head sounds like columnaris, what are your test results in ammonia,nitrite,nitrate,and ph, salt is good as columnaris desease dosn't like it, velvet looks like a gold dusting on the fish.

 

[Apache]

He definitely looks like he has gold dusting on his ventral fins, but his head looks kind of grayish (which I was told could be velvet too). The IchX I'm using also treats velvet and a few other diseases (but not sure, as I'm at work and the bottle is at home). Will test his tank parameters when I get home, but in the past everythings been good...

 

[Apache]

OK, I'm home now and tested all the tanks: All tanks (betta bachelor pads):

NitrAte 0, NitrIte 0, Ammonia 0, Hardness 120, Alkalinity 0
pH 7

He's more active tonight and still eating...