Hi, i have a 36 gallon hex BW setup my gravity is at 1.008, PH at 7.8 and 78 temp i have a Green SPotted Puffer and a Jade Goby,Today i bought a Black Finned Shark and added him to the tank after i added him i saw what looks like a bunch of Ick that i didnt see in the LFS. he was being kept as a fresh water (slightly brackish) fish at the LFS, so should the salinity in my tank kill the ICK or am i going to have to treat him?