I have a Stars and Stripes puffer about 6" covered in ich from fins to skin. Odd thing is he looks healthy as can be, swims all over and eats good. Problem is I do not have a quarantine tank as now since I will be moving soon, but I do have a 38 gallon tank still running with a few peices of live rock and 2 demsals. Should I lower the salinity to around 1.009 for a week?