This was perhaps a dumb move, but I've taken the advice of an lfs associate whom a friend of mine trusts greatly. (he helped my friend set up her reef tank, and has given consistently good advice) Last night I added 5 hermit crabs, 3 sand-sifting snails, and 2 small coral frags. I had inquired about my "cycle," as I had initially seen ammonia in the first few days, which has since subsided and remained at 0. I had observed nitrite for just two days, which has also since subsided and remained at 0. Nitrates started out at 5ppm, and since have climbed to 10ppm. He was under the impression that starting with the live rock I had, and combining it with a product he recommended I use (Fritz Zyme #9) that I had effectively cycled the tank, and that it should be ready for a small bio load. As such, I decided to go for the recommended "clean up crew" and to persist in testing the water parameters regularly to ensure no harm comes to any of these creatures.
Of the two frags I picked up, one was of zoanthids (orange center, kinda brownish ring of tentacles) and one had a red mushroom on it. The mushroom seems to have irridescent blue spots, and that particular frag also had 2 featherdusters and another unidentified piece of coral. (as well as a couple hitchhiker bristleworms) I've come to realize that the things I thought were "featherdusters" in the tank initially were likely some form of tube-worm, though I'm not entirely knowledgeable about the subject as of yet. What I have noticed is that the hermits have systematically been going around and picking them apart, eating whatever is inside of them.
Among the hitchhikers... this morning I noticed something I'd not thought I had to worry about, due to a lack of clicking noises indicative of a stowaway mantis shrimp. Upon turning the lights on this morning, I saw what I believe to be a 3-4mm long baby mantis shrimp. It seemed to have the same body characteristics of a mantis shrimp, tried to swim in the same manner, and sure as heck didn't like the light much. I've caught a couple side photos of it, but the quality is fairly poor. (nothing worth really identifying the bugger by just yet... hopefully I'll catch it out in the open again some time soon)
At any rate, I know it likely wasn't the best idea to go for living creatures just yet, but I'll be dilligent in ensuring parameters stay where they should be to keep them from harm's way. I'll follow this with a photo post in a short while, I'm busy reformatting my sister's laptop currently.