I just got a flame angel 3 days ago I put him in the QT tank, the same tank I just pulled 2 other fish out of a week ago. The flame angel ate the first 2 days but not much. I noticed some small white spots on the fish so I tested my water, notice that I had an elevated ammonia level and a small nitrate level. So I mixed up some new saltwater and did a 4 gallon water change on a 29 gallon system. The tank is a 29 gallon bare bottom couple pieces of PVC pipe and a hang on the back filter. What should I do? Should continue water changes should I add some type of additives. Any help would be appreciated. Thanks Tom