Re: supplements
I have had much more success with using a better salt mix than adding supplements. I am now using the two part mix from Marine Environments and I must say my soft corals and anemone spend much more of their time fully open and looking healthy than when I was using the cheapest mix I could I find and supplementing. Most of the supplements I was using precipated out as little white granules on my rocks and substrate, as far as I can tell. I do have an high alkalanity problem in my house water, which I have solved using a series of particulate and activated charcoal filters. This has also been a great boon to the health of my reef.
Good luck!
Eric