Ok.. heh I am gonna get SLAMMED for this.. I know it.. but hon, I have had my tank maybe 2 months longer than yours and mines a full fledge OCEAN already, lol
Here is what I did...
TESTS TESTS TESTS!!!!!!!!
Get a test kit. (Everything I am mentioning here happened in about 10 days.)
Day1:
I mixed my salt WITH my water IN my tank.
Added crushed coral, and turned on my powerheads and lights.
Day2(roughly 30 hours later):
I added 25 LBs Live Rock (50 gallon tank)
Day3: I added 8 more LBs live rock. And at the suggestion of a friend witha tank who claimed he could 'power cycle' a tank, I added 6 damsels. (Think about this, they are hard to catch later, so if you dont mind them, do it, if you wanna not have any damsels, might need another way to speed the cycle)
Day4: Tested my water, and had both ammonia and Nitrites at unhealthy, but not dramatic levels.
Day 5 & 6: Left tank as is and left damsels in there. Still no loss of life yet.
Day 7: Tested water, ammonia is in safe levels and nitrites are borderlining (hate judging the color on those kits!!)
Day 8: Still no loss of life, im convinced at this point that I could keep Damsels in a toilet if I provided salt and a live rock. - added 10 more LBs of Live rock
Day 9 - 10: sat on tank.. (not literally) just watching the tank do its thing, started noticing little feather dusters in the rock and a sponge growing out of it)
Day 11: Tested water, ammonia completely gone and Nitrites now only ONE level above safe on the color card. Nitrates are up tho.
Day 12: PAYDAY.. who could resist.... I bought 3 fire fish and put them in. (They were at ***** and I figured they would die either way, and had better chances in my tank) added 10 Lbs live rock.
Day 13: A damsel died, and I thought maybe things were gonna crash. Tested water.. to my surprise.. Nitrites and Ammonia levels fine. Nitrates are one color above 0. At this point I posted a message here asking what this all meant, and BurnNSpy (you da man burn!!) advised the tank had cycled and I should do a 50% water change. - done -
day 14 - 15: Left it all alone a couple days for good measure. Tests now showing good water conditions.. apparently Burn was right
Day 16: Added Star Polyps and a scooter blen.
The rest is history.. the polyps, damsels, firefish, and blennie are all alive. I have lost a couple mushrooms along the way and 2 leathers. But I have bubble corals, polyps, frogspawns, crabs, snails, starfish, etc all in the tank. My Xenia are already splitting into more and thriving. My water conditions are great. I seem to be doing better on the whole with the LESS HARDY anemones and fish than I am with the easy ones.. GO figure.
But my point would be this.. if your water reads fine, then you should be able to add something. I have heard that if your tank cycles fast like mine did, its not as stable on a whole. But a cycle is a cycle, and if your tank has cycled fast, well, waiting 6 months isnt going to make it any safer.. it still was cycled two weeks into it. Im beginning to believe that having a saltwater tank is NOT about hard or easy, its about commitment. If you are really willing to be anal (excuse the french) about water changes, testing water, spending the money, etc.. you should be fine. You hear lots of stories about crashes, but you have to figure most people arent about to say, "My tank crashed and by the way I hadnt changed the water in months because I was busy playing tennis" Instead you will hear, "My tank crashed out of the blue!!"
Personally, I would test your tank and if readings are fine (or close to fine) I would put a couple damsels in there.