If you use the correct equip you shouldn't have any noise. The only major noise you could have would come from the over flow(crashing water) and the pump(humming).Once you get going on it you'll quickly find ways around any noise.
Good Luck,
Brad
Yes - go ahead and transfer the tang over, but be careful. Keep a very close eye on him for that tang's tend to carry ich and isn't really noticed 1-2 weeks after you have it in your tank. That's how I almost lost mine.
Good Luck,
Brad
M - I feel for you. I had the same thing happen to me. My peppermint shrimp were eating both my snails and my hermits. Best thing I can suggest is to watch the shrimp and if it keeps killing than get rid of it. That's the only thing that worked for me.
Good Luck,
Brad