I have a 5.5 gallon tank for my beta and have had him for almost a year. About 2 weeks ago, I bought 5 tetras and 2 mystery snails. I noticed my beta was acting strange and appears to be sick with ich. Two of the tetras died and one of my snails. I do not have a heater but have maintained a good water temperature thus far. My concern is that I am worried that the Marineland Ick Remedy I purchased may harm my snail. Is it safe for my snail to remain in the tank while I am treating my beta and 3 tetras?