i have my yellow tang in a qt and i am useing cupramine.it says 16 drops for 10.5 gallons wait 48 hours then repeat.when i told this to the pet store he said don't do that it's too much.this guy has been giving me alot of differant advice than what i read on the internet so has anyone used this stuff or am i going to see my tang die?tonight it will be the forth day in qt and he looks better but still not eating