http://www.drsfostersmith.com/Produc...&N=2004+113016 - This is what I'd use for
ICH, it's a new organic herbal med, if you want to use a med on it. It won't kill the good bacteria in your tank and is safe for all fish.. Raising the tank temp to 82 for a couple weeks should knock the ich out even without meds, they just help.
Velvet is: Scratching, small gold to white spots, loss of color, weight loss, difficulty breathing due to gill damage. You can turn the lights out and shine a flashlight on your shark to see if the spots are golden or not.