Tip I got- treat for 12 days everyday and do 20% water change EACH DAY before adding meds. Then after 12th day, continue to do same ever other day till the 16th day. I started with just salt and just got Rid Ick. So I've been using that for 6 days now. Unfornatly I started treating 1-2 spots on each fish, now its tail is covered in spots and I'm praying that with in my next 6 days it drops and goes away. I hate ick! I have to do water change and vacummn every day, and I just want to see my fish healthy. Bad thing is, now water is a tad cloudy, but that'll get fixed tomorrow. Also-- continue treatment for 3-4 days AFTER Last Sign of ick is gone to be certain you killed everything off. Never treated before my self, but its a link somewhere I had..... anyway, pretty much what I just said. good luck