Hi everybody.....I saw something in my tank yesterday that I'm concerned about. I was looking at my tank yesterday, and saw this little worm looking thing on my "live rock"
. We have had the tank set up about 3 months now, and when we bought the live rock it was plain white and we didnt see any "life" from it, never have. We also have crushed coral, I know thats bad now, but the LFS told us we "needed" it, but we plan on switching to sand soon. The only thing we have in our tank is 5 hermit crabs and 1 green chromis. I feed the fish flake food and some times blood worms and the day before yesterday I fed it freeze dried tubifex worms. I saw 1 "worm" on the rock and then I noticed THOUSANDS on the CC. I'm not sure if they are even worms. They are about 1/4 inch long and black, look like small black thin hairs. They look like they move, but I'm not sure if that is just the water movement. Could it have been from the tubifex worms? I've never fed the SW fish those, I had them for our FW fish but it said on the container for marine fish too, so I decided to try it. Could this be something harmful to my fish? And I don't think they came from the rock, the CC is covered in them, and like I said, I never saw anything from this rock in the 3 months we've had it. I cant take a pic of them because I don't have a camera yet that works, my other one doesnt take good pictures in the house and there is no way it would pick up those tiny worm things. I did a water change about 4 days ago, and they wont there then, so this has really got me puzzled. 
. We have had the tank set up about 3 months now, and when we bought the live rock it was plain white and we didnt see any "life" from it, never have. We also have crushed coral, I know thats bad now, but the LFS told us we "needed" it, but we plan on switching to sand soon. The only thing we have in our tank is 5 hermit crabs and 1 green chromis. I feed the fish flake food and some times blood worms and the day before yesterday I fed it freeze dried tubifex worms. I saw 1 "worm" on the rock and then I noticed THOUSANDS on the CC. I'm not sure if they are even worms. They are about 1/4 inch long and black, look like small black thin hairs. They look like they move, but I'm not sure if that is just the water movement. Could it have been from the tubifex worms? I've never fed the SW fish those, I had them for our FW fish but it said on the container for marine fish too, so I decided to try it. Could this be something harmful to my fish? And I don't think they came from the rock, the CC is covered in them, and like I said, I never saw anything from this rock in the 3 months we've had it. I cant take a pic of them because I don't have a camera yet that works, my other one doesnt take good pictures in the house and there is no way it would pick up those tiny worm things. I did a water change about 4 days ago, and they wont there then, so this has really got me puzzled. 
