Have had my FOWLR up now for nearly six months. 90 gallon display with 30 gallon sump/refugium. Tank has been cycled now for several months & my nitrates are around 5-10ppm, zero ammonia & nitrites. Just a few fish - blue hippo tang, percula & a couple of blue chromis. Am I in good enough shape to start adding a soft coral or two? Any suggestions on something easy to start with? Anything I should be dosing the tank with before trying to add anything? I have been using the Reef Crystals salt, but not sure what this gives me over the regular instant ocean.