well last night i took a look in my tank and my severum had what looks like ich. small salt sized white spots. They are only on his fins. I put some meds in. not even a half dose because i ran out. Well this morning he has about half as many spots. Is it even possible for ich to be killed this fast. My temperature is around 80 normally so i didnt turn it up for fear of frying the fish. I will get more meds today but is it even possible to kill ich this fast?