ok so i have a 55g tank and i noticed one of my rams and cardinal tetras started having ich. so i raised to temp to like 82. i put melaflex in for about 3 days than i ran out of medicine than added salt. i also bought one bottle of marcel maricide at petsmart and out it in but i only hade enough for day one becasue i went back to petsmart and they were sold out of it. i did a water change and started adding ich attack. just as i started to add ich attack i noticed it have left my ram and my tetra no more ick. 3 days later my cardinal is getting it and the same rm is starting to get it as well?????need some help on what to do here thanks