Okay so this might be the thread I'm looking for. I'm in the midst of setting up a 75 gallon reef. I'd like to have 1 or 2 Tangs. What I'd really like to do is put them, 1 or both in my 46 bowtank for a week or so to take care of my algae problem...lol then move them to the 75. I obviously wouldn't even purchase them until the 75 is ready. I'd QT them first in a 29 QT. I have had a Regal Tang but got it very small and it battled ich until it died. This was before I really knew much about hyposalinity treatments. By the time I learned, it was too late. Grrr...my own fault. I would like to try another Regal and maybe a Yellow Tang. However, I have read that the Yellows are quite aggressive. I also realize that the 75 might not be quite large enough for 2. I will have a 29 gallon sump/fuge added to the 75 also. Any suggestions would be great!! I also really like the Scopaz...so it'd have to be either a yellow or a scopaz...lol. I'm a lil' leary of the probably ich problems associated with the Regal Tang. Are Yellow and Scopaz less susceptible? I need all the Tang info I can get on Tangs appropriate to my size tank. Some day, I'll set up a larger tank...Some day I'll own a Powder Blue!!!