live rock

I just got some rock and I was wondering if anyone could tell me what these branchy little things are that are on it? I've included some photos. Thanks a bunch!

I only have one question and it's a simple one...... I hope. I'm wanting to set up a reef tank with reef safe fish. I'm almost ready to start purchasing live rock and such. My question is, would putting an 18 inch airstone at the bottom do any type of damage to rock or fish?

ok so im getting a tank set up and preparing to get started. I want to use ls. I keep seeing all this bagged livesand, which says it contains benificial bacterias. So my question is: Isnt Livesand supposed to contain lots of living organisms? Worms, algeas, tiny sea stars and the like? So...

maybe a silly question but will live rock stay alive with out light?

this was mentioned in another post but to avoid high jacking sum ones post. Could sum one tell me more about Curing live rock the proses and how it is done or direct me to a previous post all about this . Thank You :)

Yes, it's those nasty fire/ bristleworms! I quit buying live rock as bristle worms are very destructive... They will destroy corals, attack sleeping fish, and generally wreak destruction in your tank...too much food is usually blamed for them, but they will increase in size and numbers even if...

hey guys i want alot of caves and stuff for my fish but can't afford to do it all in live rock so what are good types of rock to use in a saltwater tank?

Hey I have noticed I have a few colors of algae in my tank on my rocks, a lot is purple and I notice that I am beginning to see yellow color, I am not sure if its algae it looks like fur, its not super heavy but just one one of the live rocks, also I noticed a blue in color fur size of a pea? I...

I have found some live rock on craigslist that some guys were selling locally, what type of live rock should i watch out for, or what dont i want? and what is the method i should take to putting them in, do I just put them and thats it, or do i have to have a procedure? Also what is curred live...

I have had an incredible stroke of luck. My lovely wife was talking amongst her group of toddler mommas and one of the other women had a husband who was looking to unload his fish tank. His 90 gallon salt water set up. The cost? Get it out of his house. That's right, a 90 gallon set up with sump...

Today I helped a friend clean out her old saltwater aquarium. It was not properly maintained and really gross. She had two large live rocks and she gave them to me. The rocks are goregous, but I don't want to put them in my fish tank for fear of some disease or something. (last time she had fish...

Does anyone have any idea what is this invert. Its stuck on my live rock and its growing. Been to a couple of fish stores in my area so far no luck. thx