Hi ron, don't add aminos if corals are brown, they will just make them more brown. You need to give us some more info about your system before anybody can really help, i.e lighting duration, how stable are your parameters, salinity etc most importantly how stable is your alk as that is key for sps. Flow thru the tank? How long has the tank been up, how long have the corals been in there? What test kits are you using to detect p and n, even the really good ones dont' do the best at measuring in the lows.
from what you've written about the coralife pulling out that much junk i would assume that nutruients are most likely the issue, so just take your time, feed a little less and let your system clean up, the best advice i can give you is make changes one at a time so that you can identify the problem.
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